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Nataly [62]
2 years ago
13

How many grams of ethanol, C₂H,OH, can be boiled with 564.1 kJ of heat energy? The molar heat of vaporization of ethanol is

Chemistry
1 answer:
nydimaria [60]2 years ago
3 0

Answer: 672.2 grams

Explanation:

With 564.1 kJ of heat energy, 564.1/38.6=14.613989637306 moles of ethanol can be combusted.

So, we need to find the formula mass of ethanol.

  • The atomic mass of carbon is 12 g/mol.
  • The atomic mass of oxygen is 16 g/mol.
  • The atomic mass of hydrogen is 1 g/mol.
  • So, the formula mass of ethanol is 2(12)+6(1)+16=46 g/mol.

Therefore, the mass of ethanol is (46)(14.613989637306)=672.2 grams.

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