MDCAT Chemistry MCQ #2772

A solution contains 40g of NaOH in 1000g of water. What is its percentage by mass?

MDCAT Chemistry MCQ #2772

  1. Question 1

    Q1. A solution contains 40g of NaOH in 1000g of water. What is its percentage by mass?

    • A) 3.85%
    • B) 4.0%
    • C) 4.08%
    • D) 4.16%

    Answer: 3.85%

    Explanation: Percentage by mass = (mass of solute / total mass) * 100 = (40 / (40 + 1000)) * 100.