mole problem?

Question

a bottle of PbSO4 contains 158.1g of the compound. How many moles of PbSO4 are in the bottle?

could you show how please.

Answer 1

use periodioc table to get molar mass of PbSO4
divide by molar mass
1.581g/ 303 g/mol= .5218 moles

Answer 2

First you need to determine the molar mass of PbSO4;

Pb is 207g/mole; sulfur is 32g/mole; oxygen is 16g/mole; so PbSO4 is:

207 + 32 + (4 x 16) = 303g/mole

Now, we need to divide the 158.1g in the bottle by the molar mass of PbSO4;

158.1g/303g/mole = 0.522mole

Answer 3

who cares get a life