Question

A student weighed 1.10 g of lithium chloride to use in a reaction. How many moles is this?

Answer 1

`"Approx 0.025 mol"`.

Explanation:

`"Moles"= "Mass"/"Molar mass"` `=` `(1.10*g)/(42.39*g*mol^-1)~=0.025*"mol"`.