I have set up the following problem so you will have a chance to do it before seeing the answers and how the answers are calculated. Try answering each of the cells in the indicated order and then check to see if you understand the problem.



M , Molar Mass


mass of sample


n, number of

moles of sample

N, number of atoms,

molecules or formula units


1st answer



Try to determine the correct molar mass of H2SO4 before clicking on the link.