Question

Write empirical formulas for the following molecules: (a) caffeine (C8H10N4O2), a stimulant found in tea and coffee, (b) butaneC4H10), which is used in cigarette lighters, and (c) glycine (C2H5NO2), an amino acid .

Answer 1

:1.
`C_4H_5N_2O`

2.
`C_2H_5`

3.
`C_2H_5NO_2`

Step-by-step explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

1.
`C_8H_(10)N_4O_2` has empirical formula of
`C_4H_(5)N_2O`

2.
`C_4H_(10)` has an empirical formula of
`C_2H_5`

3.
`C_2H_5NO_2` has empirical formula of
`C_2H_5NO_2`