15.
A mixture of carbon dioxide and hydrogen gases is maintained in a 9.62 L flask at a pressure of 3.44 atm and a temperature of 63 °C. If the gas mixture contains 12.5 grams of carbon dioxide, the number of grams of hydrogen in the mixture is _____
g.

Answer:

Water's polarity allows it to dissolve other polar substances very easily. When a polar substance is put in water, the positive ends of its molecules are attracted to the negative ends of the water molecules, and vice versa.

Explanation:

Answer/Explanation:

When a polar substance is put in water, the positive ends of its molecules are attracted to the negative ends of the water molecules, and vice versa.  Because molecular polarity results from the VECTOR sum of the individual bond dipoles. Water's polarity allows it to dissolve other polar substances very easily.

Answer:

See explanation

Explanation:

The boiling point of a substance is affected by the nature of bonding in the molecule as well as the nature of intermolecular forces between molecules of the substance.

2-methylpropane has only pure covalent and nonpolar C-C and C-H bonds. As a result of this, the molecule is nonpolar and the only intermolecular forces present are weak dispersion forces. Therefore, 2-methylpropane has a very low boiling point.

As for 2-iodo-2-methylpropane, there is a polar C-I bond. This now implies that the intermolecular forces present are both dispersion forces and dipole interaction. As a result of the presence of stronger dipole interaction between 2-iodo-2-methylpropane molecules, the compound has a higher boiling point than  2-methylpropane.

A titration is an experiment where a volume of a solution of known concentration is added to a volume of another solution in order to determine its concentration. Many titrations are acid-base neutralization reactions, though other types of titrations can also be performed.Aug 12,

Answer:

[PCl₃] = 0.031M

[Cl₂] = 0.031M

[PCl₅] = 0.969M

Explanation:

Based on the reaction:

PCl₅(g) ⇄ PCl₃(g) + Cl₂(g)

Keq is defined as:

Keq = 1.0x10⁻³ = [PCl₃] [Cl₂] / [PCl₅]

Where [] are equilibrium concentrations of each species

Inital [PCl₅] = 2.0mol / 2.0L = 1M.

In equilibrium:

[PCl₃] = X

[Cl₂] = X

[PCl₅] = 1M-X

Where X is reaction coordinate

Solving for X in Keq:

1.0x10⁻³ = [X] [X] / [1-X]

1.0x10⁻³ - 1.0x10⁻³X = X²

1.0x10⁻³ - 1.0x10⁻³X - X² = 0

X:

X = -0.032M. False solution, there is no negative concentration

X = 0.031M

That means equlibrium concentrations are:

[PCl₃] = 0.031M

[Cl₂] = 0.031M

[PCl₅] = 1-0.031M = 0.969M

Explanation:

V is not an SI base unit. (C)

Volume can be expressed as m³ in units.

In turn, m is the SI base units for length.

Answer:

83.4g

Explanation:

The reaction expression is given as:

       Cu   + 2AgNO₃  →   Cu(NO₃)₂  +  2Ag

Mass of copper  = 24.58g

Unknown:

Mass of silver produced  = ?

Solution:

To solve this problem, let us find the number of moles of the copper;

   Number of moles = [tex]\frac{mass}{molar mass}[/tex]  

 Molar mass of Cu  = 63.6g/mol

   Number of moles  = [tex]\frac{24.58}{63.6}[/tex]   = 0.39mole

    1 mole of Cu will produce 2 moles of Ag

   0.39 mole of Cu will produce 0.39 x 2 = 0.77moles of Ag

Mass of Ag  = number of moles x molar mass = 0.77 x 107.9  = 83.4g

Answer:

The driver in the car because a truck is a bigger vehicle and the impact of a truck to a car is more damaging than a car to a truck. Weight difference is the key I think.

Explanation:

Answer: with dog figs- it is 590

With decimals it is 589.68

Explanation:

Answer:

D. One dependent variable and one experimental variable

Explanation:

The experimental variable is defined as an independent variable which can be manipulated during an experiment in order to find out its impact or influence on the dependent variable.

The dependent variable refers to a variable that changes when an experimental or  independent variable is manipulated.

Every experiment must have at least one experimental variable and one dependent variable in order to yield any meaningful result.

Answer:

The molar concentration of water sample that has 1 ppm arsenic is 1.33  * 10⁻⁵ M

Explanation:

1 parts per million (ppm) means 1 part of solute in a million parts of solution.

Since 1 million, 10⁶ mg = 1 kg, 1 ppm = 1 mg/kg

The density of water = 1.0 kg/L, therefore, the volume of 1 kg of water = 1 L

Hence, 1 ppm = 1 mg/kg = 1 mg/L

molar mass of arsenic = 75 g/mol

1 mg of arsenic = 10⁻³ g or 0.001 g

number of moles of arsenic in 0.001 g of arsenic = 0.001 g / 75 g/mol = 1.33  * 10⁻⁵ moles

Molar concentration = 1.33 * 10⁻⁵ mol / 1 L = 1.33  * 10⁻⁵ M

Therefore, the molar concentration of water sample that has 1 ppm arsenic is 1.33  * 10⁻⁵ M

Mass of O₂ formed = 7.84 g

Given

Reaction

2KClO₃(s) ⇒2KCl(s) + 3O₂(g)

P water = 23.8 mmHg

P tot = 755 mmHg

V = 6.22 L

T = 25 + 273 = 298 K

Required

mass of O₂

Solution

P tot = P O₂ + P water

P O₂ = P tot - P water

P O₂ = 755 - 23.8

P O₂ = 731.2mmHg = 0.962 atm

Ideal gas law :

n = PV/RT

n = 0.962 x 6.22 / 0.082 x 298

n = 0.245

= mol x MW

= 0.245 x 32

= 7.84 g

Answer:

A.) an exothermic reaction that has an increase in disorder.

Explanation:

got it correct (unit review test)

Answer:

no .........................

Answer:

1. The pressure in outer space is so low that many consider it as non-existant. It has a pressure of 1.322 × 10−11 Pa. Pressure may be detected from the molecule of air or water hitting you. Since there is very little air and hardly ever water hitting you in space, pressure is almost zero or negligible.

2. Standard sea-level pressure, by definition, equals 760 mm (29.92 inches) of mercury, 14.70 pounds per square inch, 1,013.25 × 103 dynes per square centimetre, 1,013.25 millibars, one standard atmosphere, or 101.325 kilopascals.

3. 0.46J/gC

explanation.The specific heat capacity of a material is given by:

C_s = \frac{Q}{m \Delta T}C s = mΔTQ

where

Q is the amount of heat absorbedm is the mass

\Delta TΔT is the variation of temperature

For the piece of iron in the problem:

m = 15.75 gm=15.75g

Q=1086.75 JQ=1086.75J

\Delta T=175 C-25 C=150^{\circ}ΔT=175C−25C=150∘

Substituting into the equation,

C_s = \frac{1086.75 J}{(15.75 g)(150^{\circ}C)}=0.46 J/gCC s = (15.75g)(150 ∘ C)1086.75J = 0.46J/gC

4. 207 J

Explanation:

The key to this problem lies with aluminium's specific heat, which as you know tells you how much heat is needed in order to increase the temperature of 1 g of a given substance by 1∘C.

#I hope it's help

Explanation:

3.4000x 10-6 +5.7000x 10-3

[tex]3.4000 \times {10}^{ - 6} = 3.4 \times {10}^{ - 6} [/tex]

[tex]5.7000 \times {10}^{ - 3} = 5700 \times {10}^{ - 6} [/tex]

now we can add them

[tex]3.4 + 5700 = 5703.4 \\ = 5703.4 \times {10}^{ - 6} [/tex]

[tex] = 5.7034 \times {10}^{ - 3} [/tex]

Answer:

2 Al(s) + 3 H₂SO₄(aq) ⇒ Al₂(SO₄)₃(aq) + 3 H₂(g)

Explanation:

Let's consider the unbalanced equation for the single replacement reaction between Al and H₂SO₄.

Al(s) + H₂SO₄(aq) ⇒ Al₂(SO₄)₃(aq) + H₂(g)

We will begin balancing S atoms by multiplying H₂SO₄ by 3.

Al(s) + 3 H₂SO₄(aq) ⇒ Al₂(SO₄)₃(aq) + H₂(g)

Then, we balance Al atoms by multiplying Al by 2.

2 Al(s) + 3 H₂SO₄(aq) ⇒ Al₂(SO₄)₃(aq) + H₂(g)

Finally, we get the balanced equation by multiplying H₂ by 3.

2 Al(s) + 3 H₂SO₄(aq) ⇒ Al₂(SO₄)₃(aq) + 3 H₂(g)

The description of the movement of any chemical element that cycles through the biosphere and plays a role in it's stability,as well as cycling through other earth reservoirs is a Biogeochemical cycle.

Crust it is literally called the continental crust

Answer:

Yellow fruit and dwarf vines are recessive traits in tomatoes. Red fruit and tall vines are dominant. Complete a Punnett square and answer the questions for a completely dominant red and tall plant crossed with a heterozygous red and dwarf plant.

Explanation:

Answer:

3906966 g

Explanation:

The number of molecules contained in a substance is given by the formula:

number of molecules = number of mole * Avogadro constant.

Given that:

number of molecules = 2.4 * 10²⁸ molecules, Avogadro constant = 6.02 * 10²³ mol⁻¹.

Substituting gives:

2.4 * 10²⁸ molecules = number of moles * 6.02 * 10²³ mol⁻¹

number of moles =  2.4 * 10²⁸ molecules / 6.02 * 10²³ mol⁻¹

number of moles = 39867 moles

The molar mass of H₃PO₄ = (1 * 3) + (31 * 1) + (16 * 4) = 98 g/mol

Hence:

mass of H₃PO₄ = molar mass of H₃PO₄ * number of moles

mass of H₃PO₄ = 98 g/mol * 39867 moles

mass of H₃PO₄ = 3906966 g

Answer:

Sxr

Explanation:

Rtxrcrctvucy

Answer:

single replacement reaction is type of reaction is Au2S+H2---> 2Au+H2S.

Answer:

Atoms

Explanation:

Answer: A

Explanation:

Answer:

C

Explanation:

because the combustion reaction produce vapor water and CO2

Answer:

For neutral atoms, the number of valence electrons is equal to the atom's main group number. The main group number for an element can be found from its column on the periodic table. For example, carbon is in group 4 and has 4 valence electrons. Oxygen is in group 6 and has 6 valence electrons.

Explanation:

Answer:

The acid base imbalance would be metabolic acidosis.

Explanation:

Metabolic acidosis is a systemic failure that can occur from various causes, from an uncompensated diabetic with an excess of ketone bodies in the blood, to poisoning with CO2.

This is regulated and compensated by the respiratory system that seeks to eliminate CO2 through the respiratory tract in order to increase the alkalinity of the blood.

This system is highly accompanied by renal aid that is responsible for excreting acid metabolites and retaining fluids for the dissolution of acidosis.

On the other hand, in patients who suffer from this systemic failure, it will be noticed as a very characteristic symptom of hypercapnia and hyperventilation, since the respiratory system is in charge of increasing the frequency to quickly decrease this acidosis and that the low blood pH do not denature the proteins critical to vital signs.

Answer:

Where’s the image?

Explanation:

Answer:

33.6 i think

Explanation:

Reaction of galvanic cell

Given

Redox reaction between Zn and Mg

Required

Half reaction

Potential of the cell

Solution

Zn²⁺ + 2e -> Zn E ° = -0.76 V

Mg²⁺ + 2e -> Mg E ° = - 2.37 V

The higher E ° of the cell will act as the positive pole/cathode

Electrode Zn as a cathode (reduction) and Mg as an anode (oxidation) (E ° of Zn cells is greater than Mg)

Half reaction

Cathode: Zn²⁺ + 2e ⇒ Zn E ° = -0.76 V

Anode: Mg ⇒ Mg²⁺ + 2e E ° = +2.37 V

------------------------------------------------- ----------- +

Cell reaction: Zn²⁺ + Mg ---> Zn + Mg²⁺ E ° cell = +1.61 V

The reaction occurs spontaneously in the absence of an electric current, thus including galvanic cells/voltaic cells

Answer:

sullage or grey water

Explanation:

sources include: sinks, showers, baths, washing machines, dishwashers and no not toliets.