Chemisty
posted by Jared .
195 g of water containing magnesium chloride boils at 102.5 celcuis. what mass of salt is needed?

Let me check you work on this. The bp elevation is 2.5C

the answer is 30.1 grams magnesuim chloride but i don't kknow how to get to the answer

bpeleveation=m*constant
m=2.5/1.86
now m=moles/kgwater=moles/.195
moles=mass/formulamassMgCl2
mass=formulamass*.195*2.5/1.85
check all that math.