What is the percent H in Ca (C2H3O2) 2

3.824 %

Explanation:

Let's rewrite the formula as CaC₄H₆O₄ and calculate the mass of each component,

Element Atomic mass/u No. of atoms Subtotal mass/u

Ca 40.08 1 40.08

C 12.01 4 48.04

H 1.008 6 6.048

O 16.00 4 64.00

Total mass = 158.17

The formula for mass percent is

% by mass = mass of component/motal mass * 100 %, or

% H = mass of H/mass of Ca (C₂H₃O₂) ₂ * 100 %

Mass of H = 6.048 u

Mass of Ca (C₂H₃O₂) ₂ = 158.17 u

% H = 6.048/158.17 * 100

% H = 0.038 24 * 100

% H = 3.824 %