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Verizon [17]
3 years ago
10

Describe molecules *no plagiarism like google etc!*

Chemistry
1 answer:
Setler [38]3 years ago
6 0

Answer:

Molecules are made up of atoms.(2 or more) They are what's on the table of elements; they are like building blocks to chemical compounds.

Hope this helps! (^-^)

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What is the term used to describe a change in motion?
Irina-Kira [14]

Answer:

it should be momentum if im not mistaken

8 0
3 years ago
The statement "Although sulfuric acid is a strong electrolyte, an aqueous solution of H2SO4 contains more HSO4− ions than SO42−
PIT_PIT [208]

The statement "Although sulfuric acid is a strong electrolyte, an aqueous solution of H₂SO₄ contains more HSO₄⁻ ions than SO₄²⁻ ions is <u>True.</u> This is best explained by the fact that H₂SO₄ <u>is a diprotic acid where only the first hydrogen completely ionizes.</u>

Why?

H₂SO₄ is a diprotic acid. That means that it has <u>two hydrogen ions</u> to give to the solution. The two dissociation reactions are shown below:

H₂SO₄ + H₂O → HSO₄⁻ + H₃O⁺

HSO₄⁻ + H₂O ⇄ SO₄²⁻ + H₃O⁺

As the arrows show, the first dissociation is complete, meaning that all the sulfuric acid that is present initially is dissociated into HSO₄⁻ and H₃O⁺. However, the second dissociation is incomplete, and it's actually an equilibrium with an acid constant  (Ka)of 1.2×10⁻².

That means that if the initial concentration of H₂SO₄ was 1M, the concentration of HSO₄⁻ is going to be 1M as well, but <u>the concentration of SO₄²⁻ is going to be much less than 1M</u>, according to the dissociation constant.

Have a nice day!

4 0
3 years ago
Calculate the heat absorbed when 31.6 g of ice at 0°C is completely melted​
attashe74 [19]

Latent heat of fusion for ice is 33600J/k

  • Mass=31.6J/k

Heat absorbed

  • k_f×m
  • 31.6×33600
  • 1061,740mJ
  • 1061J
8 0
2 years ago
If a balloon is heated, what happens to the volume of the air in the balloon if the pressure is constant?
MakcuM [25]

Answer:

B. It increases.

Explanation:

  • We can use the general law of ideal gas: <em>PV = nRT.</em>

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R  is the general gas constant,

T is the temperature of the gas in K.

It is clear that, at constant P, the volume of the gas (V) is directly proportional to the temperature of the gas.

<em>V ∝ T.</em>

<em></em>

<em>So, If a balloon is heated, the volume of the air in the balloon if the pressure is constant:</em>

B. It increases.

4 0
3 years ago
according to the law of conservation of energy when a car uses 10000 J of chemical energy from gasoline how much of this energy
DerKrebs [107]
<span>Conservation of energy holds that all energy in a system will simply change state, and no more nor less energy will be created or lost during the operation of the system. In this case, then, all 10000 J of energy will be transformed during the operation of the car.</span>
4 0
3 years ago
Read 2 more answers
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