What is the mass of solute in 200.0 L of a 1.556-M solution of KBr

The molarity of KBr solution is 1.556 M

molarity is defined as the number of moles of solute in volume of 1 L solution.

the number of KBr moles in 1 L - 1.556 mol

Therefore in 200.0 L - 1.556 mol/L x 200.0 L = 311.2 mol

Molar mass of KBr - 119 g/mol

mass of Kbr - 311.2 mol x 119 g/mol = 37 033 g

mass of solute therefore is 37.033 kg