Calculate the mass percent composition for each of the following compounds: separate answers by a comma

Question

a) 3.40 g of NA, 2.54 g of S and 3.81 g of O

b)0.500 g of C and  0.043 g of H

 c)0.880 of Na g,  1.40 of Cl g and 1.89 g of O

 

Answer 1

Hello, Ailyn,

Add the masses of all the elements and then use that to determine the percentage of that element. For a):

Bob