1.) Calculate the number of atoms in 2.58 mol antimony.

Question

2.) Determine the mass of 1.45 mol FePO4.

3.) Calculate the number of mol in 6.75 g of NaCl.

4.) What is the volume, in liters, of 2.54 mol methane (CH4) gas?.

5.) What is the percent composition of B4H10?

Answer 1

Here are questions quite similar to yours. Post your work if you still have questions about any of these.
http://www.jiskha.com/display.cgi?id=1391994083

Answer 2

1.485