Question

Two samples contain carbon and

hydrogen in the amounts shown in
the data table.
What is the mass percent of
hydrogen in compound 1?
Carbon (g) Hydrogen (g)
Compound 1
Compound 2
15.0
22.5
% Hydrogen
5.0
7.5
Total Mass of
Sample (g)
20.00
30.00

Answer 1

Does anyone know compound 2?? I’m stuck I don’t know how to do this

Answer 2

Answer: 25%

Explanation: To find the mass percentage of a chemical you need to do mass/total mass x 100 = %.

In this case you would do 5.0/20.00 because 5.0 is the mass of the hydrogen and 20.00 is the total mass. That equals .25 so the next step is to times that by 100.

.25 x 100 = 25, so we know that the percent of the hydrogen mass in compound 1 = 25%