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-Dominant- [34]
3 years ago
8

5. Calculate the decrease in temperature when 6.00 L at 20.0 °C is compressed to 4.00 L.

Chemistry
1 answer:
Kazeer [188]3 years ago
5 0

Answer: 195.3 K

Explanation: Use Charles Law to get T2

Charles Law V1 / T1 = V2 / T2

Derive the equation to find T2

T2 = V2T1 / V1

Convert temperature into K

T1 = 20.0 °C + 273 = 293 K

Substitute the values:

4.00 L x 293 K / 6.00 L = 195. 3 K

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When salt is dissolved in water, what happens to the water
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<em>When salt is dissolved in water</em>, many physical properties change, among them the so called colligative properties:

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Explanation:

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<u>Boiling point</u>:

The boiling point is the temperature at which the vapor pressure of the liquid equals the atmospheric pressure. Since we have seen that the vapor pressure of water decreases when a solute occupies part of the surface, now more temperature will be required for the water molecules reach the atmospheric pressure. So, the boiling point increases when salt is dissolved in water.

<u>Freezing point</u>:

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<u>Osmotic pressure</u>:

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The empirical formula for a compound is C2H4NO. If its molar mass is 232.2 g/mol, what is the molecular formula of the compound?
Irina18 [472]

Empirical formula mass

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