What is the mass of 1.45 moles of Al?

Aluminium has a relative atomic mass of 27.

So, 1 mole of aluminium has a mass of 27g
2 moles of Aluminium have a mass of (27*2) = 54g

Can you work out the mass of 1.45 moles of Al now?

Post your answer :)

0.06 is the mass of 1.45 Al.

1 mole of Al -> 27g
2 moles of Al -> 27 x 2 = 54 g
1.45 moles of Al -> 27 x 1.45 = 39.15 g