Answer:
- % of calcium carbonate = 28.8%
Explanation:
The percentage of a substance in a mixture is calculated with the formula:
- % of substance = (mass of substance / mass of mixture) × 100
In this case we have:
- mass of substance = mass of calcium carbonate = 1.73 g
- mass of mixture = mass of calcium carbonate + mass of sodium carbonate + mass of magnesium sulfate
- mass of mixture = 1.73 g + 2.34 g + 1.93 g = 6.00 g
Now you can substitute the values in the formula for percentage:
- % of substance = (1.73g / 6.00g) × 100 = 28.8%
