How to calculate percentage composition?

How do you calculate the percentage of an element in something?

for example....



hydrogen in NaH2PO4



hydrogen in CaSO4



Oxygen in NH4H2PO4



Oxygen in (CH3)2COHow to calculate percentage composition?
Steven ...find the total total molar mass for the substance then take the individual elements molar mass and divide into it the total the multiply by 100 to get percent..



You get the molar mass for the element from the periodic tables for H its 1 etc...(atomic number)

You can do this its really easy..I got faith in ya..From the E...

dominoes online