A solution contains 20% (w/w) of glucose. If the total mass of the solution is 2

Practice Questions

Q1
A solution contains 20% (w/w) of glucose. If the total mass of the solution is 200 g, what is the mass of glucose in the solution?
  1. 20 g
  2. 40 g
  3. 60 g
  4. 80 g

Questions & Step-by-Step Solutions

A solution contains 20% (w/w) of glucose. If the total mass of the solution is 200 g, what is the mass of glucose in the solution?
  • Step 1: Understand that '20% (w/w)' means that 20 grams of glucose are present in every 100 grams of the solution.
  • Step 2: Identify the total mass of the solution, which is given as 200 grams.
  • Step 3: To find the mass of glucose, use the formula: Mass of glucose = (percentage / 100) x total mass of solution.
  • Step 4: Substitute the values into the formula: Mass of glucose = (20 / 100) x 200 grams.
  • Step 5: Calculate the mass of glucose: (20 / 100) x 200 = 40 grams.
  • Weight/Weight Percentage – Understanding how to calculate the mass of a component in a solution based on its weight/weight percentage.
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