Molarity (M) = Moles of Solute (mol) / Liters of Solution (L)
List Known Quantities into Above Equation
A. Molarity of Glucose Solution = 0.4 M
B. Liters of Glucose Solution = 0.5 L
Substitute Known Quantities into Above Equation
A. 0.4 M = x mol / 0.5 L
Solve for unknown value "x"
A. 0.5 * 0.4 = x
B. x = 0.2 mol of Glucose in the Solution