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Ne4ueva [31]
3 years ago
8

the temperature of an ideal gas in a sealed 0.7 m^3 container is reduced from 340 k to 270 k. the final pressure of the gas is 4

0 kPa. The molar heat capacity at constant volume of the gas is 28.0 j/mol*k. the work done by the gas is closest to
Chemistry
1 answer:
vivado [14]3 years ago
6 0

Answer: dulimu

Explanation:refer to maxwell…use your duduli

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How do the isotopes of helium compare to one another?
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8 0
3 years ago
A sample of iron (fe) with a mass of 200.0 g releases 9,840 cal when it freezes at its freezing point. what is the molar heat of
Lostsunrise [7]

The molar heat of fusion for iron with a mass of 200.0g releases 9,840 cal when it freezes at its freezing point is 2,747.7 cal/mol.

<h3>How to calculate molar heat of fusion?</h3>

The heat of fusion of a substance can be calculated by using the following formula:

Q = m∆H

Where:

  • Q = quantity of heat
  • m = mass
  • ∆H = change in temperature of fusion

However, the quantity of heat has been given as 9840calories. The molar heat of fusion of iron can be calculated by dividing the heat of fusion by the number of moles of iron.

Moles of iron = mass ÷ molar mass

moles = 200g ÷ 55.8g/mol

moles = 3.58moles

molar heat of fusion = 9840 cal ÷ 3.58mol

molar heat of fusion = 2748.6 cal/mol

Therefore, the molar heat of fusion for iron with a mass of 200.0g releases 9,840 cal when it freezes at its freezing point is 2,747.7 cal/mol.

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