Question

What is the mass of compound Z if 25g of compound X and reacted it with 9g of compound Y which yeilded compound Z?

Answer 1

acc to law of mass conservation

mass cant be lost or created

so mass before reaction is equal to mass after reaction

total mass of reactants = total mass of product

mass of Z=mass of X+mass of Y

mass of Z=25+9

mass of Z=34grams