Multiple choice

What is the difference in mass (in grams) of Nitric acid and water, if their mass ratio is $3:8$ in total of $330$ grams of acidic solution mixture?

  1. $150$
  2. $90$
  3. $240$
  4. $140$
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A Correct answer
Explanation

Ratio 3:8, total parts = 11. One part = 330 / 11 = 30 grams. Nitric acid = 3 * 30 = 90g. Water = 8 * 30 = 240g. Difference = 240 - 90 = 150g.

AI explanation

The total mixture mass of 330 grams is divided by the sum of the ratio parts, 3 plus 8, which is 11, meaning each part equals 30 grams. The mass of nitric acid is 3 parts multiplied by 30 grams, which is 90 grams. The mass of water is 8 parts multiplied by 30 grams, which is 240 grams. The difference in mass is 240 minus 90, which equals 150 grams.

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