How many grams does 0.500 moles of CuBr weigh?

Answer 1

Technically, you have to ask weight where? On the Moon? in Orbit. grams is mass, weight is in newtons.

molmass CuBr =143.45grams

so the mass of 1/2 mole is half that.

Now, its weight is quite a different matter.

Weight=mass*g=mass1/2 mole above in Kilograms * 9.8N/kg