Question

Acetic acid has the formula C2H4O2, while ribose has the formula C5H10O5. Select the statements that correctly describe both the empirical formulas of these compounds and their percent composition by mass.

a) The empirical formula of acetic acid is CH2O, and the percent composition by mass is 40% C, 6.67% H, and 53.33% O.
b) The empirical formula of ribose is CHO, and the percent composition by mass is 45.45% C, 9.09% H, and 45.45% O.
c) The empirical formula of acetic acid is CH2O, and the percent composition by mass is 50% C, 16.67% H, and 33.33% O.
d) The empirical formula of ribose is CHO, and the percent composition by mass is 40% C, 6.67% H, and 53.33% O.

Answer 1

The empirical formula of acetic acid is CH2O, and the percent composition by mass is 40% C, 6.67% H, and 53.33% O. The empirical formula of ribose is CHO, and the percent composition by mass is 45.45% C, 9.09% H, and 45.45% O.

Step-by-step explanation:

The empirical formula of acetic acid is CH2O, and the percent composition by mass is 40% C, 6.67% H, and 53.33% O. The empirical formula of ribose is CHO, and the percent composition by mass is 45.45% C, 9.09% H, and 45.45% O.