Question

What is the molar mass of helium in kg/mol?

Answer 1

`4*g*mol^-1`

Explanation:

But you wanted `kg*mol^-1`.

So the molar mass of helium is `4*cancelg*mol^-1xx10^-3*kg*cancel(g^-1)` `=` `4xx10^-3*kg*mol^-1`