Calculate the amount (mass) of acetaldehyde (C2H40, molar mass - 44.0526 g moll) that causes a...

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Answer 1

Answer #1

HEAT PRODUCED=12.91 $\times$ (41.7-27.8)=179.449KJ

GIVEN HEAT PRODUCED AFTER COMBUSTION=1166.9KJ/mol

so number of moles of acetaldehyde is=1166.9 $\div$ 179.44=6.5 mol

mass ofacetaldehyde=6.5 $\times$ 44.05= 286.3419 ganswer

IF WE 44.05 $\div$ 6.5=6.77g THIS is INCORRECT ANSWER.

Answer 2

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