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erica [24]
3 years ago
10

1. State how increasing the temperature of a gas changes its volume, assuming pressure is held

Chemistry
1 answer:
vredina [299]3 years ago
7 0

Explanation:

the volume and temperature of a gas have a ditect relationship,as the temperature increases the volume also increases when pressure is held constand, heating the gas increases the kinetic energy of the particles or atoms,causing the gas to expand until the pressure returns to its original value

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Which substance is an electrolyte? A) O2 B) Xe C) C3H8 D) KNO3
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Answer:
            KNO₃ is an electrolyte.

Explanation:
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3 years ago
How many molecules are in 3.50 moles of H2O<br>​
Debora [2.8K]

Answer:

2.11 x 10²⁴ molecules.

Explanation:

  • <em>It is known that every 1.0 mole of a molecule contains Avogadro's number of molecules (NA = 6.022 x 10²³).</em>

<em><u>Using cross multiplication:</u></em>

1.0 mole of H₂O contains → 6.022 x 10²³ molecules.

3.5 mole of H₂O contains → ??? molecules.

∴ 3.5 mole of H₂O contain = (3.5 mol)(6.022 x 10²³) = 2.11 x 10²⁴ molecules.

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