What is the percentage of water in the following compound?

sodium carbonate decahydrate, na2co3 • 10h2o

% by mass h2o

The mass percent of water in is 63%.

Explanation:

In , there are 2 sodium atoms, 1 carbon atom 13 oxygen atoms and 20 hydrogen atoms.

To calculate the mass percent of element in a given compound, we use the formula:

Mass of water =

Mass of = 286 g

Putting values in above equation, we get:

Hence, the mass percent of water in is 63%

c. 75.7

i think that is the right