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.

Check your answer...do you agree? Great if you do. If you do not check the Solution: below the table to see how the number of moles of H₂SO₄is calculated.

The next answer is the number of atoms, molecules or formula units are in the sample. Try to determine the value before clicking on the link.

Formula

M , Molar Mass

(gmol^-1)

mass of sample

(g)

n, number of

moles of sample

N, number of atoms,

molecules or formula units

H₂SO₄

98.0

0.825

0.00842

3rd answer

Solution:

We are to calculate the number of moles in the sample. This is done by converting the grams of H₂SO₄to moles using the molar mass of H₂SO₄.