Question

A sample of CaCO3 was reported as being 30% pure. If the total mass of the sample is 100 grams, how much of it is CaCO₃?

Answer 1

The amount of CaCO₃ in the 30% pure sample is 30 grams.

Step-by-step explanation:

To find the amount of CaCO₃ in the sample, we can multiply the total mass of the sample (100 grams) by the percentage of purity (30%).

30% of 100 grams is equal to 0.30 * 100 = 30 grams.

Therefore, 30 grams of the sample is CaCO₃.