Based on 0.032699 g MG reactant, determine the % of MG by mass.

Answer 1

To determine the percentage of Mg (Magnesium) by mass, we need to know the molar mass of Mg. The molar mass of Mg is 24.305 g/mol.

First, we need to convert the given mass of Mg (0.032699 g) to moles:

0.032699 g Mg * (1 mol Mg / 24.305 g Mg) = 0.001346 moles Mg

Next, we need to calculate the percentage of Mg by mass in the compound:

Mass percentage of Mg = (mass of Mg / total mass of compound) x 100

Total mass of compound = mass of Mg

= 0.032699 g

Mass percentage of Mg = (0.032699 g / 0.032699 g) x 100

= 100%

Therefore, the percentage of Mg by mass in the compound is 100%.