Question

What is the mass of each in grams (1) 2.0mole of cu (2) 0.5mole of s (3) 6.023x10^23 atoms of ca

Answer 1

1) 1 mole is 63.5 g

2 moles is 63.5*2

=127 g

2) 1 mole is 32 g

0.5 mole is 32*0.5

=16 g

3)-6.023*10^23 atoms of ca=1 mole of ca=40g