Table 2.1 $${ } _ { 8 } ^ { 16 } \mathrm { O } \quad { } _ { 6 } ^ { 12 } \mathrm { C } \quad { } _ { 1 } ^ { 1 } \mathrm { H }$$
-Calculate the number of moles in 92 grams of ethyl alcohol, C?H5OH, using the information in Table 2.1.

Question

Quizplus · Accepted Answer

The molecular weight of ethyl alcohol (C2H5OH) is calculated using the atomic masses: C (12), H (1), and O (16). The formula is C2H5OH, so the molecular weight is 2(12) + 6(1) + 16 = 46 g/mol. Therefore, 92 grams of ethyl alcohol is 92/46 = 2 moles.

Table 21 816O612C11H{ } _ { 8 } ^ { 16 } \mathrm { O } \quad { } _ { 6 } ^ { 12 } \mathrm { C } \quad { } _ { 1 } ^ { 1 } \mathrm { H }816​O612​C11​H

Table 21 ${ } _ { 8 } ^ { 16 } \mathrm { O } \quad { } _ { 6 } ^ { 12 } \mathrm { C } \quad { } _ { 1 } ^ { 1 } \mathrm { H }$