What is the symbol for hydrogen ion?

Answers

Answer 1
The symbol for hydrogen ion is H+

Related Questions

10. is the strength of intermolecular forces determined by the bond strengths within the individual molecules? explain your reasoning.

Answers

No, the strength of the bonds between the individual molecules did not determine the strength of the intermolecular interactions.

What does chemistry mean by intermolecular forces?

Intermolecular forces are those that exist between molecules. It differs from an intra-molecular force, or the compel which exists within a molecule, because of this. A force within a molecule would therefore resemble an covalent bond. Intermolecular force is the name for the force that exists between molecules.

Which five intermolecular forces are there?

Intermolecular forces come in five flavors: ion-induced dipole forces, directional antenna dipole forces, induced dipole forces, and dipole-dipole forces. Ions or polar (dipole) molecules are held together by ion-dipole forces. Molecules are connected via intermolecular bonds. The Van der Waals energies are another name for them.

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what atom would be created if uranium lost 10 protons?

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Atomic number of uranium is 92. Thus it contains 92 protons and 92 electrons. When it loses 92 protons the atom formed with 82 protons is lead (Pb).

What is uranium?

Uranium is 92nd element in the periodic table. Uranium is an actinide thus classified into the f-block elements. It is a radioactive element and is very unstable.

Actinides such uranium undergo nuclear decay to form stable atoms. The number of electrons and number of protons will be equal in the neutral atom.

Uranium contains 92 protons, when 10 protons are removed it forms an atom with 82 protons. That is lead . Lead is the 82nd element n periodic table.

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What mode of transportation is limited to specialized products such as liquids and gases?.

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Transport via pipelines is only possible for specialist goods like liquids and gases.

Describe gas.

Gas is a state of matter that lacks both a defined shape and volume. Compared to other states pf material, such as liquids and solids, gasses have a lower density. Particles, which have a great deal of kinetic energy but aren't very attracted to one another, are separated by a lot of free space.

Which 10 gases make up the majority of the atmosphere?

The Earth's atmosphere is made up of approximately % ammonia, 21 percent oxygen, 0.93 % argon, 0.04 % carbon dioxide, and small traces of bright blue, helium, methane, krypton, ozone, and hydrogen in the form of water vapor, according to the educational website Vision Starting to learn (opens in new tab).

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Write the electron configuration of the oxygen atom?

Answers

Answer:

I think it's 2s^2 2p^4

Explanation:

NOT really sure but, I think its 2s^2 2p^4

Please, someone correct me if im wrong

ANSWER ⬇️⬇️⬇️⬇️⬇️⬇️

Answer:

electronic config. of oxygen = 2,6

s cl2 2h2oh2s 2hclo in the above reaction, the oxidation state of sulfur changes from to . how many electrons are transferred in the reaction?

Answers

The chemical created determines the oxidation state of sulfur. Sulphur can widen its valances because it has an empty d orbital because of its larger size. As a result, it displays oxidation states of 2, 2, 4, and 6, respectively.

The sulfur atom's oxidation number drops from 0 to -2. The following are the guidelines for determining oxidation numbers: Ions have an oxidation number of 4, while elements have an oxidation number of 5, more electronegative elements have an oxidation number of 6, and less electronegative elements have an oxidation number of 7.

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what is the electron pair geometry for an ammonia molecule, nh3? group of answer choices bent linear tetrahedral trigonal pyramidal none of these

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The electron pair geometry for an ammonia molecule, NH₃ is tetrahedral.

According to VSPER theory :

for  NH₃ : number of electron pairs arre:

Number of electron pairs = 1 / 2 [ V + N  -C + A]

where V is number of valence electrons on central atom = 5

N = number of monovalent electron = 3

C = charge of cation = 0

A  = charge of anion = 0

number of electron pairs = 1 / 2 [ 5 + 3 ]

                                          = 4

The 4 electrons group are present out of which three are bonding groups and one present as lone pair of electron therefore the electron geometry is tetrahedral and the molecular geometry is trigonal pyramidal.

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Enter a chemical equation for HClO4(aq) showing how it is an acid or a base according to the Arrhenius definition. Consider that strong acids and bases dissociate completely. Express your answer as a chemical equation. Identify all of the phases in your answer. Enter a chemical equation for HBr(aq) showing how it is an acid or a base according to the Arrhenius definition. Consider that strong acids and bases dissociate completely.Express your answer as a chemical equation. Identify all of the phases in your answer. Enter a chemical equation for Ca(OH)2(aq) showing how it is an acid or a base according to the Arrhenius definition. Consider that strong acids and bases dissociate completely.Express your answer as a chemical equation. Identify all of the phases in your answer.

Answers

HClO₄(l)  → H⁺ (aq) + ClO₄⁻ (aq) for HClO4(aq) , HBr(aq)→H+(aq)+Br−(aq) for HBr(aq) and Ca(OH)₂ → Ca²⁺ + 2OH⁻ for Ca(OH)2(aq) are the equation showing how it is an acid or a base according to Arrhenius definition.

A material is referred to as an Arrhenius acid if it contains a hydrogen atom and readily emits hydrogen ions or protons in water, in accordance with the Arrhenius theory. The quantity of replaceable hydrogen ions in an Arrhenius acid is referred to as its basicity. Chloride (Cl-) and hydronium (H3O+) ions are created when hydrochloric acid is dissolved in water.

A Lewis acid is a molecule or ion that can make a covalent bond with an electron pair or donate a proton, depending on its Brnsted-Lowry or Brnsted-Lowry acid properties. The proton donors, also referred to as Brnsted-Lowry acids, make up the first group of acids.

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After pyruvate is formed, it must either be converted to another molecule to enter the citric acid cycle and ultimately produce ATP by utilizing the electron-transport chain, produce NAD^+. Identify the products formed in the pathway of pyruvate and indicate whether NADH + H^+ or NAD^+ are produced under aerobic and anaerobic respiration. Drag the appropriate labels to their respective targets.

Answers

At the end of pyruvate pathway two carbon dioxide molecules, electrons, and one ATP molecule are produced as products.

Pyruvic acid can be made from glucose through glycolysis, and then it is  converted back to carbohydrates (such as glucose) through gluconeogenesis, or to fatty acids through acetyl-CoA. It can also be used to construct the amino acid alanine, and it can be converted into ethanol.

Pyruvic acid supplies energy to the  living cells through the citric acid cycle also known as the Krebs cycle, that is when oxygen is present (aerobic respiration); when oxygen is lacking, it generally ferments to produce lactic acid. Pyruvate is an important chemical compound in biochemistry. It is the output of the anaerobic metabolism of glucose known as glycolysis.

One molecule of glucose breaks down into two molecules of pyruvate, which are then used to provide further energy in one of two ways. Pyruvate is converted into acetyl- coenzyme A, which is the main input for a series of reactions known as the Krebs cycle. Pyruvate is also converted to oxaloacetate by an antipleuritic reaction, which replenishes Krebs cycle intermediates; also, oxaloacetate is used for gluconeogenesis.

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what makes a element least likely to be a ionic compound

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In water, an element can dissolve that is least likely to be an ionic compound.

What substances are most likely to result in ionic compounds?

Ionic compounds typically form when metal and nonmetal elements are combined. For instance, the nonmetal chlorine (Cl) and metal calcium (Ca) combine to form the ionic compound calcium chloride.

Noble Gases are colorless gases with a very low reactivity. The noble gases are referred to as inert because they don't easily combine with other substances to form compounds. The noble gas family consists of helium, neon, argon, krypton, xenon, and radon.

Compound formation involving noble gases is extremely rare. They are incomprehensible gases that don't interact with other substances in their environment.

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what is the pressure in a region of outer space where there is 2 molecule/cm3 and the temperature is 5 k ?

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1.38*10⁻¹⁶ Nm⁻² is the pressure in a region of outer space where there is 2 molecule/cm3 and the temperature is 5 k

What is an illustration of pressure?

By pressing a knife on some fruit, one can get a straightforward illustration of tension. The surface will not be sliced if you press the flat section of the blade against the berry. The force is dispersed over a broad radius (low pressure).

Briefing:

P = nKT/V

  = 2*1.38*10⁻²³*5/10⁻⁶

  = 1.38*10⁻¹⁶ Nm⁻²

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what is the weight percent of vitamin c in a solution made by dissolving 2.60 g of vitamin c, c6h8o6 , in 55.0 g of water?

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The weight percent of vitamin c in a solution made by dissolving 2.60 g of vitamin c, c6h8o6 , in 55.0 g of water  4.51 %

The percent by weight can be expressed as:

Percentage weight = solute /solution × 100 %

Now we have that the mass of the solution is

Mass of solution = mass of solute + mass of solvent

Mass of solution = 2.60g + 55.0g

Mass of Solution = 57.6g

Percentage weight  = 2.60/57.6  × 100 = 4.51 %

When one or more solutes are dissolved in a solvent, the result is a homogenous mixture known as a solution. a solvent is a substance that helps a solute dissolve so that a homogenous mixture results. When a substance dissolves in a solvent, it forms a homogenous mixture, which is known as a solute.

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if 32.5 mol32.5 mol of an ideal gas occupies 36.5 l36.5 l at 11.00 ∘c,11.00 ∘c, what is the pressure of the gas?

Answers

The pressure exerted by the gas is 210.417 atm at 11°C.

It is given that the number of moles is 32.5 and this occupies a volume of 36.5L at 11°C which is 284K. To find the pressure of the gas, the following formula is used:

PV = nRT

By rearranging the formula we get pressure as,

P = (nRT)/V

Here, n is the number of moles, R is the gas constant which is given as 8.314, T is the temperature in Kelvin and V is the volume in liters. By substituting all the values into the formula we get,

P = (32.5x8.314x284)/36.5L

P = 76738.22/36.5

P = 210.41699atm

This value could be approximated as 210.417atm

Therefore, the amount of pressure exerted by the gas of 32.5 moles of 36.5L at 11°C is 210.417 atm.

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what are possible units for the reaction rate? group of answer choices l • mol–1 • s–1 s–2 mol • l–1 • s–1 s–1 l2 • mol–2 • s–1

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The possible units for the reaction rate is mol L⁻¹ s⁻¹.

The rate of the reaction  given reaction is :

aA +bB ---> cC  +   dD

r = k[A][B]

  = -1/a Δ[A]/ Δt = -1/b Δ[B] / Δt = 1/c Δ[C] / Δt = 1/d Δ[C] / Δt

reaction rate = concentration / time

reaction rate unit is = concentration / time

concentration is moles per liter. therefore reaction rate unit is  mol L⁻¹ s⁻¹. The rate of the reaction or we can say that the reaction rate is the speed of the reaction at which reactants are converted into the products.

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Pure sodium metal placed in water will spark and ignite, as well as form bubbles and gas. What are the signs that this is a chemical reaction? check all that apply.

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The signs that a chemical reaction is occurring is the fact that that combination of this element with water resulted in giving off gas as well as combusting

at a certain temperature, the solubility of strontium arsenate, sr3(aso4)2, is 0.0500 g/l. what is the Ksp of this salt at this temperature?

Answers

According to the given statement Ksp for strontium arsenate is 9.98×·10⁻³

What is the purpose of arsenate?

Arsenic is used in industry as an alloying agent in addition to being used to make glass, pigments, linens, cardboard, metal glue, wood preservatives, and ammunition. Arsenic is also used in several pesticides, feed additives, and pharmaceuticals, as well as in the tanning of skins.

Balanced chemical reaction (dissociation):

Sr₃(AsO₄)₂(s) → 3Sr²⁺(aq) + AsO₄³⁻(aq).

s(Sr₃(AsO₄)₂) = 0.0650 g/L.

s(Sr₃(AsO₄)₂) = 0.0500 g/L ÷ 540.7 g/mol = 9.24 mol/L.

s(Sr²⁺) = 3s(Sr₃(AsO₄)₂).

s(AsO₄³⁻) = 2s(Sr₃(AsO₄)₂).

Ksp = s(Sr²⁺)³ · s(AsO₄³⁻)².

Ksp = (3s)³ · (2s)².

Ksp = 108s⁵.

Ksp = 108 · (9.24 mol/L)⁵ = 9.98×·10⁻³

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write the balanced net ionic equation for the reaction when aluminum nitrate and potassium iodide are mixed in aqueous solution. if no reaction occurs, simply write only nr. be sure to include the proper phases for all species within the reaction.

Answers

The balanced net ionic equation for the reaction when aluminum nitrate and potassium iodide are mixed in aqueous solution is:-

The net ionic equation is : Al3+(aq)+3OH−(aq)→Al(OH)3(s)

What is net ionic equation?

The net ion equation must be balanced by both mass and charge. Mass balance means that the mass of each element is the same on the product and reactant sides. Charge balancing means ensuring that the total charge is equal on both sides of the equation.

Therefore, The balanced net ionic equation for the reaction when aluminum nitrate and potassium iodide are mixed in aqueous solution is:-

The net ionic equation is : Al3+(aq)+3OH−(aq)→Al(OH)3(s)

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An atom has three protons and one neutron in its nucleus. How many electrons will it have; if it is a stable atom? How do you know?



When you combine vinegar and baking soda, a gas is produced. Why is the gas considered evidence that a chemical reaction occurred?



How can you use a graduated cylinder, water, and an electronic balance to find the density of water?

Please answer all 3
:)

Answers

1. The number of electrons in the atom is 3.

The atom is not stable because the proton and neutron ratio is greater than 1.5

2. The gas produced is considered evidence that a chemical reaction occurred because it is a new product.

3. The graduated cylinder measures the volume of water, the electronic balance measures the mass of water, and the density of water is obtained from the ratio of the mass and volume of water measured.

What are protons and neutrons?

Protons are the sub-atomic particles found in the nucleus of atoms that are positively charged. The proton number is equal to the electron in neutral atoms.

Neutrons are the sub-atomic particles found in the nucleus of atoms that are neutral or possess no charge.

The ratio of the protons and neutrons given stability to the atom of its is is not greater than 1.5

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Convert .4 moles NaCl to molecules

Answers

Answer:

2.4 x 10^23 molecules

Explanation:

The Avogadro's Constant is equal to 6.022 x 10^23 for one mole of substance

1 mole = 6.022 x 10^23

so 0.4 mole = (0.4 x 6.022 x 10^23)/1 = 2.4 x 10^23 molecules

write the balanced chemical equation for the reaction of the weak acid hcn with water. include the phase of each species. chemical equation:

Answers

HCN(aq)+H2O⇋CN−(aq)+H3O+(aq)

This is the weak acid HCN's acid dissociation equilibrium.

What is an easy way to define acid?

A compound that creates salts when it combines with specific metals and releases hydrogen ions into water. Certain dyes are given a scarlet hue and a sour flavour by acids. Acids generated by the body, such stomach acid, can assist organ function. One type of acid is hydrochloric acid.

What varieties of acid are there?

Organic acids and inorganic acids are the two different types of acids. Mineral acids are another name for inorganic acids.The strength of organic acids is often lower than that of inorganic acids. Although inorganic acids don't include carbon, organic acids do, which is the major distinction between the two.

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try creating a flow chart that traces the flow of energy through your body. what products increase entropy of you and your surroundings?

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Energy and energy transformation are depicted graphically and mathematically using energy flow diagrams, also known as energy flow charts. Primary energy used as unprocessed fuels to feed a system, energy supply, conversion or transformation, losses, and energy being used can all fall under this category.

When solid or liquid reactants produce gaseous byproducts, entropy increases. When liquid products are formed from solid reactants, entropy also rises. The environment emits heat, and the additional heat raises the entropy of the environment. There are more options for how to distribute the energy over the molecules when more energy is added to the environment. Thus, raising the temperature also raises the environment's entropy. Energy and energy transformation are depicted graphically and mathematically using energy flow diagrams, also known as energy flow charts. Primary energy used as unprocessed fuels to feed a system, energy supply, conversion or transformation, losses, and energy being used can all fall under this category.

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Indicate the direction of polarity of each of the covalent bonds by placing the appropriate delta notation next to each end of the bond. CO Answer Bank 6+ 5- 0–C1 0-F C-N C1-C SH S-C

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the direction of polarity of each of the covalent bonds by placing the appropriate delta notation next to each end of the bond.

a water molecule, a typical illustration of polarity. There are two charges: a negative charge in the center (red shade) and a positive charge on either side (blue shade).

A bond's polarity results from the respective electronegativities of the constituent parts. Remember that an element's ability to draw electrons to itself when it is a component of a compound is known as electronegativity.

Chemical bond are formed when two or more atoms in a compound's molecule come contact and are tightly bound together. Covalent and ionic bond are the two different kinds of chemical bonding.

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based on the position of the elements on the periodic table, which hydrogen bond would result in the greatest difference in electronegativity?

Answers

Of all the elements in the periodic table, nitrogen has one of the highest electronegative energies.

How do hydrogen bonds and electronegativity relate?

4 to 50 kJ per mole are the strengths of hydrogen bonds. As a result of the significant difference in electronegativity between the H atom and the N, O, or F atoms in molecules with N-H, O-H, or F-H bonds, the covalent connection between the H atom and these atoms is extremely polar (i.e., a bond dipole).

Electronegativity

Numerous techniques have been devised to quantitatively assess an element's tendency to gain or lose electrons since it is crucial to comprehend an element's chemistry to know whether it does so more frequently or less frequently. An element termed electronegativity is a component of the most crucial approach

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the pka for acetic acid is 4.75. if you have a solution containing 0.25 m acetate and 0.075 m acetic acid, what is its ph?

Answers

The pH of the given solution is 5.27.

In chemistry, pH, which was originally denoting as potential of hydrogen, refer to a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have lower pH values than basic or alkaline solutions.

According to the given information,

pKa of acetic acid = 4.75

Concentration of acetic acid = 0.075m

Concentration of acetate salt = 0.25m

The pH of a simple acetate solution is given by:

pH = pKa + log(salt/acid)

Hence,

pH = 4.75 + log(0.25/0.075)

pH = 4.75 + 0.522

pH = 5.27

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what is the molecular compound name for hydrazine, n2h4? multiple choice question. a) trinitrogen pentahydride b) dinitrogen hydride c) dinitrogen tetrahydride d) trinitrogen quatrohydride

Answers

The molecular compound name for hydrazine, N₂H₄ is dinitrogen tetrahydride.

Hydrazine, N₂H₄ is an inorganic compound which is also known as diamine or dinitrogen tetrahydride. It is named so because it consists of two nitrogen and four hydride atoms. It is a flammable liquid with a strong pungent smell like ammonia. It also acts as a strong base.

Some uses of hydrazine are:

Sodium azide, the component used in air bags is produced from hydrazine.It is used in manufacturing pharmaceuticals.It is used in agricultural fields such as an ingredient in insecticides, pesticides and fungicides.It is used in industrial boilers to control the pH of water.

Thus,  option C, dinitrogen tetrahydride is the correct answer.

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continue adding salt to the solution until undissolved salt remains on the bottom of the container. this is now a (a) solution because no more sodium chloride can dissolve. the simplest ratio of ions in the solution is (b) sodium ion to (c) chloride ion and the simplest ratio of ions bound in the solid is (d) sodium ion to (e) chloride ion.

Answers

Continue adding salt to the solution until undissolved salt remains on the bottom of the container. this is now a (a)saturated solution because no more sodium chloride can dissolve. The simplest ratio of ions in the solution is (b)1 sodium ion to (c) 1 chloride ion and the simplest ratio of ions bound in the solid is (d) sodium ion to (e) chloride ion.

Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by means of water molecules, as this diagram indicates. as soon as this happens, the salt is dissolved, resulting in a homogeneous solution .

Dissolving a solid in liquid, inclusive of desk salt in water, is a bodily exchange because only the country of the matter has changed. A not unusual misconception approximately dissolving is that heating and/or stirring are required for the dissolving process to arise. on this observe, quantitative experimental evidence turned into accrued and analyzed to illustrate that neither heating nor stirring is required for dissolving.

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You add 100. 0 g of water at 60. 0°c to 100. 0 g of ice at 0. 00°c. Some of the ice melts and cools the water to 0. 00°c. When the ice and water mixture has come to a uniform temperature of 0°c, how much ice has melted?.

Answers

The Mass of ice is 69.12g.

What is mass?

It is a dimensionless quantity that expresses a particle or object's mass. The accepted unit of mass under the International System (SI) is the kilogram.

What is temperature?

Temperature is a measure of the average kinetic energy of the particles inside an object. The temperature increases cause these particles to move more quickly. It is possible to measure temperature using a thermometer or a calorimeter.

first calculate the amount of heat as follows;

q= mass of water C= (0°C-55°C)

=100.0g (4.186J/g°c) (-55°C)

=-23023J

Heat lost by water is gained by ice,

-q=m*ΔH

-23023J= m*333J/g

= 69.12g

Therefore, Mass of ice is 69.12g.

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There’s three pictures because I couldn’t fit all of the question and answers in one but please help me it’s due soon
And I will mark brainliest

Answers

The reaction depicted in option D would not occur.

What is the reaction that would not occur?

We know that a chemical reaction has to do with the interaction between species that are combined in a system. As the interaction is taking place, there would be a rearrangement of the atoms of the substance and a recombination of the atoms so as to obtain the products.

We can see that the kind of reaction that we are have here is a single replacement reaction. This implies that one of the species is replaced by the specie with which it reacts.

This is only possible if it is reactaing with a specie that is higher than it in the electrochemical series of the elements. The reaction in option D would not occur because the bromine is less than the chlorine in the electrochemical series.

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what is the electron-pair geometry for n in nf3? fill in the blank 4 there are fill in the blank 5 lone pair(s) around the central atom, so the molecular geometry (shape) of nf3 i

Answers

Electron Pair Geometry determines the spatial arrangement of a molecule's bonds and lone pairs. The electron pairs repel each other whether or not they are in bond pairs or in lone pairs. Thus, electron spread themselves as far as possible to avoid repulsion.

What is electron pair geometry of NF3, H2O, NOBr and GeH4 ?

NF3 (Nitrogen trifluoride)

Electron pair geometry is tetrahedral

There is one lone pair. Geometry would be then pyramidal

NOBr (Nitrosyl Bromide)

Electron pair geometry is triangular planar

One lone pair then geometry will be bent or angular

H2O (water)

Electron pair geometry is Tetrahedral

Two lone pair then geometry will be bent or angular

GeH4 (Germanium Hydride)

Electron pair geometry is Tetrahedral

Zero lone pair then geometry will be Tetrahedral

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some average bond ebtalpiesinb are as follows, wharf us the enthalpy change ft he formation of hydrogen brmide from hyrogen and bromine

Answers

The amount of heat released or absorbed when a chemical reaction occurs at constant pressure is referred to as enthalpy change. An exothermic reaction is a chemical reaction or physical change that produces heat. Heat is produced as a byproduct of the reaction.

(d) Around 560°C, the reaction becomes spontaneous. 13-36. The process entropy change: 2 H(g) H2(g) is -98.74 J/mol-K. The H2 molecule has an enthalpy of atom combination of 435 kJ/mol. As a result, this is a redox reaction. However, there is no change in the oxidation state of the reactants in the other reactions listed in the options. As a result, those are not redox reactions. The correct answer is option A, which is $H 2 + Br 2xrightarrow2HBr$.

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g draw a picture showing your hypothesis about how they do this. the following items should be included in the picture: protons, atp synthase, electron carriers/transport proteins and molecules, inorganic electron donor, inorganic electron acceptor

Answers

A premise drawn from some evidence is known as a hypothesis. This is the starting step of any study that converts the research questions into predictions, including protons and electron carriers.

Inorganic electron acceptor, inorganic electron donor, and transport proteins and molecules are also included. Variables, the population, and how the variables are related are all included as components. Any hypothesis that is put to the test in order to determine how two or more variables relate to one another is called a research hypothesis. Unchangeable and negatively charged, an electron is a part of an atom. Aside from the atom nucleus, electrons surround it. The mass of an electron is extremely small compared to that of a neutron or proton, and it carries one unit of negative charge (1.602 x 10 -19 coulomb).

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For SN1 solvolysis of t-butyl chloride, rank the solvents from fastest reaction to slowest reaction.acetone, ethanol, methanol, water, formic acid, and acetic acid what is a pcv? what does pcv stand for? what is another name for pcv? describe the procedure for obtaining a pcv. how can a call center facility manager help manage the business continuity risk associated with weak, infrequent earthquakes? Franklin roosevelt won the election because he had some success in new york. What did he do?. an oncology clinic nurse is reinforcing prevention measures for oropharyngeal infections to a client receiving chemotherapy. which statement by the client indicates that teaching was successful? The dimensions of a box have been doubled. How many times greater is the volume of the box? 8, 6, 4, or 2 PLSS SOMEONE EXPLAIN ASAP!!!Gas mileage is the number of miles you can drive on a gallon of gasoline. A test of a new car results in 540 miles on 20 gallons of gas. How far could you drive on 75 gallons of gas?What's is the car's gas mileage, Athletes who train at high altitudes increase their red blood cell count, which increases their oxygen supply during exercise. Increased oxygen supply results in __________. A. increased glycolysis B. increased use of myokinase C. longer aerobic respiration D. longer anaerobic fermentation E. reduced ATP consumption A jewelry designer plans to make a triangular pendant out of gold wire. The wire costs $31.65 per centimeter. What is the possible range of costs for the wire?The wire can cost more than $____ and less than $____ Which river in the us is the setting for the book adventures of huckleberry finn?. 5 / 7/10 answer in fraction form one argument made in the video is that economic growth will enable china to grow its way out of debt. the analyst also mentioned other factors that could aid china. which items were mentioned as factors that could alleviate china's burden from its debt level? which were seen as problems for china managing its debt? what is the probability of rolling a die ten times and obtaining odd digits on eight or less of the rolls? during his speech on gun violence, john is presenting statistics on gun violence in major metropolitan areas. what could john do next to make sure his audience understands the impact of these facts and figures? after a grueling flight, your plane lands in tokyo. starving, you stop at the first sushi bar you see and spend 5,800 japanese yen. your currency from an earlier stop in germany is still in euros. how many euros did you spend? assume the dollar per yen exchange rate is .00806 and the dollar per euro exchange rate is .9203. the mean score of 888 players in a basketball game was 14.514.514, point, 5 points. if the highest individual score is removed, the mean score of the remaining 777 players becomes 121212 points. what was the highest score? draw the electron dot formula for silicon disulfide, sis2. how many nonbonding electron pairs are in a silicon disulfide molecule? An office building requires a heat transfer rate of 20 kW to maintain the inside temperature at 21 C when the outside temperature is 0 C. A vapor-compression heat pump with R 134a as the working fluid is to be used to provide the necessary heating. The compressor operates adiabatically with an isentropic efficiency of 82%. Assume the refrigerant exits the evaporator as saturated vapor and exits the condenser as saturated liquid at the respective pressures. Find:Given ?T cond= ?T evap= 10 C as shown in Figure below, what are the pressuresfor condenser and evaporator?What is the mass flow rate of the refrigerant (kg/s)What is the COP for actual cycleWhat is the COP for Carnot at T outside and T inside (0 and 21 C respectively) why were a greater number of average men able to participate in politics under the leadership of pericles? (explain in one or two sentences.) Which details from the first three chapters of You Should Meet Katherine Johnson support the main idea that there were fewer opportunities for African Americans to receive an education and find good jobs when Katherine was young?Select the two correct answers.ResponsesKatherine's father owned a farm and Katherine's mother had been a school teacher.Katherine was hired to work as a "computer," someone who did the math that NACA engineers needed.Though Katherine graduated with honors with a math degree in 1937, she was not hired to work for NACA until 1953.Katherine and her siblings had to move 120 miles away in order to attend high school.