Based on grams of MG reacted, determine the percent MG by mass.
To determine the percent MG by mass, you need to know the total mass of the sample and the mass of MG that reacted.
1. Calculate the total mass of the sample, which is the sum of the mass of MG reacted and the mass of the remaining components in the sample.
Total mass of sample = mass of MG reacted + mass of remaining components
2. Calculate the percent MG by mass using the following formula:
Percent MG by mass = (mass of MG reacted / total mass of sample) x 100
For example, if 10 grams of MG reacted and the total mass of the sample is 50 grams, the percent MG by mass would be:
Percent MG by mass = (10 / 50) x 100 = 20%
This means that 20% of the total mass of the sample is MG.