Question #e2e8f

1 Answer
Jan 20, 2014

To get the percent by mass of a mixture, you divide the mass of each component by the total mass and multiply by 100.

Explanation:

Percent by mass=mass of componenttotal mass×100%

EXAMPLE:

A mixture contains 1.203 g CaCO3 and 1.797 g NaCl. What is the percent by mass of each component?

Solution

Total mass=(1.203 + 1.797) g=3.000 g

% by mass CaCO3=1.203 g3.000 g×100%=40.10%

% by mass NaCl=1.797 g3.000 g×100%=59.90%