Answer
There are 10.8 g of potassium hydroxide in this solution.
Work Step by Step
$35.0 mL = 35.0 \times 10^{-3} L = 0.0350 L$
1. Find the number of moles:
$Concentration(M) = \frac{n(mol)}{V(L)}$
$5.5 = \frac{n(mol)}{0.035}$
$5.5 * 0.035 = n(mol)$
$0.193 moles = n(mol)$
2. Determine the molar mass of this compound (KOH):
39.1* 1 + 16* 1 + 1.008* 1 = 56.108g/mol
3. Calculate the mass
$mm(g/mol) = \frac{mass(g)}{n(mol)}$
$mm(g/mol) * n(mol) = mass(g)$
$ 56.108 * 0.193 = mass(g)$
$10.8 = mass(g)$
