What would be the resulting molarity of a solution made by dissolving 31.3 grams of Ca(OH)2 in enough water to make a 1050-milliliter solution? Show all of the work needed to solve this problem.

Question

anonymous · Answer

$$c=\frac{ n }{ v }$$
c=concentration (molarity)
n=no. of moles
v=volume

anonymous · Answer

you can find the number of moles by
$$n=\frac{ m }{ M }$$

anonymous · Answer

.402 g/mol or .402 mols?

anonymous · Answer

sorry it took me so long..just saw you responded

anonymous · Answer

@oliver.84  n=no. of moles
                     m=mass
                     M=Molar mass (mass of 1 mole) which you calculated as 74.09 g/mol

anonymous · Answer

$$n=\frac{ 31.3g }{ 74.09 \frac{ g }{ mol } }$$
$$n=0.422 mol$$

anonymous · Answer

so  what did you get for the concentration??