Answer:
Mass = 2.12 g
Explanation:
Given data:
Volume of sodium chloride solution = 30 mL (30/1000 = 0.03 L)
Molarity = 1.2 M
Grams of sodium chloride = ?
Solution:
Molarity = number of moles / volume in litter
Number of moles = Molarity × volume in litter
Number of moles = 1.2 M × 0.03 L
Number of moles = 0.036 mol
Mass in grams:
Mass = number of moles × molar mass of sodium chloride
Mass = 0.036 mol × 58.5 g/mol
Mass = 2.12 g
