Question

Cobalt chloride hexahydrate has a formula weight of 237.9 g/mol.how much would you use to make 0.5 liter of a 0.3 m solution?

Answer 1

moles of cobalt chloride hexahydrate

=volume* molarity

=0.5*0.3

mass of cobalt chloride hexadydrate

=moles*formula

=3.5*237.9

=35.7 g

=