Answer:
0.60mol
Explanation:
Mg(OH)2
P=m/v
P=density
m=mass
v=volume
rearrange to get m=Pv
2.34g/mL x 15mL= 35.1g
then find the molar mass of magnesium hydroxide:
Mg=24.31g
H=1.01g
O=16.00g
molar mass Mg(OH)2 = 58.33g
then convert mass to mol:
35.1g/58.33g = 0.60mol
