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LiRa [457]
3 years ago
6

Can anyone can answer practice problem exercise 6.5

Chemistry
2 answers:
NemiM [27]3 years ago
6 0

Answer: Add more information please! Thanks!

Explanation:

Anettt [7]3 years ago
4 0
The answer is: 62.498 g/mol
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What mass of propane (c3h8(g)) must be burned to supply 2775 kj of heat? the standard enthalpy of combustion of propane at 298 k
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Answer is: 55.125 grams <span>of propane must be burned.
</span>Balanced chemical reaction: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.
Make proportion: 1 mol(C₃H₈) : 2220 kJ = n(C₃H₈) : 2775kJ.
n(C₃H₈) = 2775 kJ·mol ÷ 2220 kJ.
n(C₃H₈) = 1.25 mol.
m(C₃H₈) = n(C₃H₈) · M(C₃H₈).
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m(C₃H₈) = 55.125 g.
n - amount of substance.
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4 years ago
Do your cells have access to everything they need over the first 4 or 5 hours that you are lost? Yes or No?
77julia77 [94]

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3 years ago
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