What is a volume​. in your own words but be more detailed about what you say.

Answer:

A and C

Explanation:

I think it's A and C but I could be wrong

Answer: The concentration of hydrogen ion in the given solution is [tex]2.81 \times 10^{-10}[/tex].

Explanation:

pOH of a solution is the negative logarithm of concentration of hydroxide ions.

Hence, if [tex][OH^{-}][/tex] is [tex]3.5 \times 10^{-5}[/tex] then its pOH value is calculated as follows.

[tex]pOH = -log [OH^{-}]\\= -log (3.5 \times 10^{-5})\\= 4.45[/tex]

Now, the relation between pH and pOH is as follows.

pH + pOH = 14

pH + 4.45 = 14

pH = 14 - 4.45

= 9.55

And, pH is the negative logarithm of concentration of hydrogen ions. Hence, [tex][H^{+}][/tex] is calculated as follows.

[tex]pH = -log [H^{+}]\\9.55 = -log [H^{+}]\\H^{+} = 2.81 \times 10^{-10}[/tex]

Thus, we can conclude that the concentration of hydrogen ion in the given solution is [tex]2.81 \times 10^{-10}[/tex].

Answer: 6.45 Joules

Explanation: I just did it

Answer:

divide the mass of element in 1 mole of the compound by the compound's molar mass and multiply the answer by 100.

Explanation:

take the molar mass of hydrogen in the water molecule, divide by the total molar mass of water, and multiply by 100.

does it help?

Answer:

Explanation:

179.8548 g/mol

The total mass of all the atoms that make up a mole of a specific molecule, measured in grams, is known as the molar mass or molecular weight. Here the molar mass of Fe(NO₃)₂ is 179.87 g/mol.

One mole of any substance has a mass known as a molar mass. An amount that has a mass equal to its atomic or molecular mass in grams is referred to as a mole of any species (atoms, molecules, ions, or particles). The letter "M" stands for molar mass.

In other terms, the molar mass is the sum of the masses of all the atoms that make up a mole of a specific molecule, expressed in grams.

Here the molar mass of Fe(NO₃)₂ is :

Fe(NO₃)₂ = (1 x 55.85 g) + (2 x 14.01 g) +(6 x 16.00 g)= 179.87 g/mol

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Answer:

Glucose. C6H12O6

Explanation:

In aerobic respiration glucose generate ATP. Which are the source of energy.

Answer:

The new concentration of the solution is 0.89 M.

Explanation:

In chemistry, dilution is the reduction in concentration of a chemical in a solution. This is accomplished by adding more solvent to the same amount of solute.

So, in a dilution, the amount of solute does not vary, but the volume of the solvent varies: as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

In a dilution the expression is used:

Ci*Vi = Cf*Vf

where:

In this case:

Replacing:

2.5 M* 250 mL= Cf* 700 mL

Solving:

[tex]Cf=\frac{2.5 M*250 mL}{700 mL}[/tex]

Cf= 0.89 M

The new concentration of the solution is 0.89 M.

Answer:

Explanation:

The answer is B

The name of the alkyne which is given in the question with structure is propyne as in that 3 carbon atoms are present.

Alkynes are those hydrocarbons in which triple bond is present between two adjacent carbon atoms.

In the given structure one triple bond is present between first two carbon atoms and then with this a single bonded carbon atom is also attached. As in the structure total three carbon atoms are present so prefix shoul be 'prop' and as this is an alkyne then name should be propyne.

Hence name of compound is propyne.

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Propyne is the chemical name for the given alkyne. Therefore, the correct option is option C.

A triple bond exists between the carbon atoms in alkynes, a group of hydrocarbon molecules. They are given names based on the IUPAC (International Union of Pure and Applied Chemistry) guidelines for systematic nomenclature. Alkyne nomenclature's primary objective is to provide each compound a precise and distinctive name that accurately captures its structure.  Based on the quantity of carbon atoms, the placement of triple bonds, and the presence of functional groups, alkyne compounds are named systematically.

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Answer:

The force applied to the object is an external force, from outside the system. When it does positive work it increases the gravitational potential energy of the system. Because gravitational potential energy depends on relative position, we need a reference level at which to set the potential energy equal to 0.

If an object is on top of a hill or in a position raised above the ground, it must have gravitational potential energy.

In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors

If an object is lifted, work is done against the force of gravity.

When work is done energy is transferred to the object and it gains gravitational potential energy.

If the object falls from that height, the same amount of work would have to be done by the force of gravity to bring it back to the Earth’s surface.

Due to the Principle of Conservation of Energy we can say that:

Gravitational potential energy at the top = kinetic energy at the bottom

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Answer:

0.89 L

Explanation:

Applying,

Boyle's Law,

PV = P'V'..................... Equation 1

P represent initial pressure, V represent initial volume, P' represent final pressure, V' represent final volume

Make V' the subject of the equation

V' = PV/P'.............. Equation 2

From the question,

Given: P = 150 mm Hg, V = 4.31 liters, P' = 725 mm Hg

Substitute these values into equation 2

V' = (150×4.31)/725

V' = 0.89 L

Answer:

10.9C digrey celsios and im sorry

Answer:

The reactant particles have a greater average kinetic energy.

A smaller fraction of the reactant particles have energy greater than the Ea.

Answer:

d

Explanation:

Answer:

0.151 mol

Explanation:

molar mass of KNO3 = (39.1 + 14 + 3×16) g/mol = 101.1 g/mol

number of moles = mass/molar mass

n = m/M = 15.3 g/(101.1 g/mol) = 0.151 mol

Answer:

Explanation:

sheesh i wouldn’t know

Answer:

Explanation:

Because your brain and the TV are programed to do certain things. As if you're going back into a memory, and you're simply rewatching a season of Beyblade: Metal Fusion on the TV.

Answer:

Q = 20377.5 Joules

Explanation:

Given the following data;

Mass = 75g

Initial temperature = 65°C

Final temperature = 0°C

Specific heat capacity of water = 4.18 J/g°C.

To find the quantity of heat released;

Heat capacity is given by the formula;

[tex] Q = mcdt[/tex]

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

Substituting into the equation, we have;

[tex] Q = 75 * 4.18 * 65 [/tex]

Q = 20377.5 Joules

Answer:

See Explanation

Explanation:

According to the question, it is established that the pain caused by a lot of insect bites owes to the acidity of the insect bites.

If this is true, then there is an urgent need to neutralize the acidic insect bite using a basic substance.

Hence the pH of the creams used to treat insect bites should be basic(having a high pH).

2. The compound methene can not exist because it is supposed to be derived from the alkane called methane which contains only one carbon atom.

In order to form an alkene, there must be a double bond between two carbon atoms. This is not possible because there is only one carbon atom in the hypothetical methene. Hence,  a compound named methene cannot exist.

Answer:

D. ) 2H2O - 2H2 + O2

Answer:

[tex] \huge\pink{\boxed{\mathfrak{Hola}}}[/tex]

I didn't understand the rest of your question, it's not in English or Spanish.

[tex]\huge\fbox{HôLLa}[/tex]

Answer:

The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth. The frequency of dark-coloured moths increased at that time, an example of industrial melanism.

Explanation:

I did this on Savvas Realize got it right.

Genetic variation is said to be the difference in the hereditary sequence. After the industrial revolution, the frequency of the dark-colored moth increased dramatically more than the light-colored moths.

Industrial melanism was an example of the evolutionary effect that occurred in the moths where the dark-colored species were favored over the light-colored species of peppered moths.

Before the industrial population, light-colored moths were large in number which later decreased with an increase in pollution. This occurred due to an increase in the pollutants and dust deposition that altered the environment.

As the pollution increased over time the dark-colored moths became dominant and increased their population over time. This is an example of industrial melanism as the color of the body was the determining factor in survival.

Therefore, dark-colored moths were prevalent after the industrial revolution.

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Answer:It a Basic oxide

Plz trust Me

Explanation:

Answer:

Sodium oxide is a simple strongly basic oxide. It is basic because it contains the oxide ion, O2-, which is a very strong base with a high tendency to combine with hydrogen ions. Reaction with water: Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution.

Explanation:

Answer:

You take the atomic, or proton number of the element, and you subtract it from the element's mass number.

Answer:

protons

Explanation:

neutrons and protons make up the mass of the atom

Answer:

done this before in my science class

Explanation:

the hole by the cap will have slightly more coming out at first due to all the toothpaste pushing forward, but over time, the middle will get more do to all the front end of the toothpaste being pushed out first

(sorry if that sounded confusing im tired, heres a cat)

The hole by the cap will have slightly more coming out at first due to all the toothpaste pushing forward, but over time, the middle will get more do to all the front end of the toothpaste being pushed out first.

Toothpaste is a key part of your daily oral hygiene routine. Along with your toothbrush and floss it helps to remove food debris and plaque from your teeth and gums.

Toothpastes can come in a gel, paste or powder form. While the ingredients differ slightly, all toothpastes contain the same general components.

With some help from your toothbrush, these help to remove debris and surface stains. This ingredient helps to prevent water loss, and keeps your toothpaste from drying out or getting gummy.  This is what gives your toothpaste a little bit of sweetness, and that minty fresh scent. Since these do not contain sugar, they also do not promote tooth decay.

Therefore, The hole by the cap will have slightly more coming out at first due to all the toothpaste pushing forward, but over time, the middle will get more do to all the front end of the toothpaste being pushed out first.

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Answer:

6

Explanation:

6.0mol ( 1 mol H2/ 1 mol Zn ) = 6.0 mol of H2

H2 is hydrogen gas (hydrogen in the air).

Answer:

Hypothesis is the answer