Molar mass of C2H5OH,
MM = 2*MM(C) + 6*MM(H) + 1*MM(O)
= 2*12.01 + 6*1.008 + 1*16.0
= 46.068 g/mol
mass(C2H5OH)= 40.4 g
use:
number of mol of C2H5OH,
n = mass of C2H5OH/molar mass of C2H5OH
=(40.4 g)/(46.07 g/mol)
= 0.877 mol
Now use:
Q = Hvap * number of mol
= 38.6 KJ/mol * 0.877 mol
= 33.9 KJ
Answer: 33.9 KJ
Use the References to access important values if needed for this question. The following information is...
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