Calculate the mass percentage composition of copper pyrite.

Calculate the percentage composition of C2H5OH.

Calculate the percentage composition of oxygen in Na2CO3

A 0.24 g of coumpound of oxgen and boron was found by analysis to contain 0.096 g of born and 0.144g of oxygen. Calculate the percentage composition of the compound by weight.

Define Mass percentage

0.246 g of an organic compound gave 0.198 g of CO_2 and 0.101 g of H_2O on complete combustion calculate the percentage composition of Carbon and Hydrogen.

Calculate the percentage composition of Ca(NO_(3))_(2)

What is the composition of copper matte?

A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution.