Find the number of moles for the following:
a) molar mass of 53.5 g/mol and weight of 1.0 g
b) molar mass of 238 g/mol and weight of 2.0 g
c) concentration of 14.3 and volume of 6.5 mL
d) concentration of 30% by wt. and volume of 4.5mL
e) concentration of 12.0 M and volume of 6.5mL