Calculate the percentage composition NAHCO3 (baking soda).

Question

SOMEONE PLEASE HELP MEEEE!!!

Answer 1

% composition is the % of each element present in the compound

For NaHCO3, from the periodic table, we have ...

Na = 23

H = 1

C = 12

O = 16 (x3) = 48

Total mass of 1 mole of NaHCO3 = 23 + 1 + 12 + 48 = 84 g/mole

% composition is as follows:

% Na = 23 / 84 (x100%) = 27%

% H = 1 / 84 (x100%) = 1%

% C = 12 / 84 (x100%) = 14%

% O = 48 / 84 (x100%) = 57%