What mass of Ca(OH)2must be dissolved in 0.504 L of a solution to make a 0.56 M solution?

0.28 g
21 g
1.1 g
0.90 g

1.1 g??

1 answer

mols Ca(OH)2 needed = M x L = 0.56 M x 0.504 L = ?
Then grams Ca(OH)2 = mols Ca(OH)2 x molar mass Ca(OH)2 = ? .