Question

What is the percent H in Ca(C2H3O2)2

Answer 1

3.824 % 3.824 %

Step-by-step 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 %

Answer 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 %