Which of the following is a change from a more condensed to a less condensed state of matter?

1 answer:

4 0

Well, which one of the choices is different? Freezing, solidifying, and condensing mean that the substance is getting colder. With melting, heat is being added to the substance meaning it is changing to a less condensed state of matter. The answer is melting.

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How many H atoms are in 6.43g x 10^24 molecules of water

kow [346]

Answer:

$12.86\times 10^{24}$ atoms of hydrogen

Explanation:

The molecular formula for a water molecule is $H_2O$ .

From the above formula, we can conclude that 1 molecule of water contains 2 atoms of hydrogen and 1 atom of oxygen.

There are $6.43\times 10^{24}$ molecules of water.

1 molecule of water = 2 atoms of hydrogen.

∴ $6.43\times 10^{24}$ molecules of water = $2\times 6.43\times 10^{24}=12.86\times 10^{24}$ atoms of hydrogen.

Therefore, there are $12.86\times 10^{24}$ atoms of hydrogen in $6.43\times 10^{24}$ molecules of water.

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3 years ago

Why does decreasing the volume of gas cause the pressure to increase if temperature is constant

Yuri [45]

There's less space, causing the air particles to collide with the walls of the container more frequently. Pressure is that energy caused by molecules striking a surface. Thus, compacting air molecules leads to higher pressure.

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3 years ago

The pH of an aqueous solution of hydrochloric acid is 2. What is the pH of the solution after the addition of 10 g of sodium chl

ololo11 [35]

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wala ako alam sagot sorry

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3 years ago

Give the number and type of hybrid orbital that forms when each set of atomic orbitals mixes:

evablogger [386]

<u>Two hybrid </u>orbitals of <u>sp </u>type forms when each set of atomic orbitals mixes one p and one s

<h3>What is orbital hybridization?</h3>

In the context of valence bond theory, orbital hybridization (or hybridisation) refers to the idea of combining atomic orbitals to create new hybrid orbitals (with energies, forms, etc., distinct from the component atomic orbitals) suited for the pairing of electrons to form chemical bonds.

For instance, the valence-shell s orbital joins with three valence-shell p orbitals to generate four equivalent sp3 mixes that are arranged in a tetrahedral configuration around the carbon atom to connect to four distinct atoms.

Hybrid orbitals are symmetrically arranged in space and are helpful in the explanation of molecular geometry and atomic bonding characteristics. Usually, atomic orbitals with similar energies are combined to form hybrid orbitals.

Learn more about Hybridization

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2 years ago

Fe(s)+CuSO4(aq)========Cu(s)+FeSO4(aq)*Note both 4's are subscripts and the equal signs represent an arrow.Suppose an industrial

igomit [66]

<u>Answer:</u> The original concentration of copper sulfate is 0.56 g/L

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)