To determine the percent by mass of magnesium in the sample, we need to first calculate the number of moles of magnesium in the sample based on the amount of hydrochloric acid solution required to react with all the magnesium.
1. Calculate the number of moles of HCl used:
moles HCl = concentration HCl * volume HCl
moles HCl = 0.1025 mol/L * 0.02624 L
moles HCl = 0.002687 mol
2. Since the reaction between magnesium and HCl is 1:1, the number of moles of magnesium in the sample is also 0.002687 mol.
3. Calculate the molar mass of magnesium (Mg) = 24.305 g/mol
4. Calculate the mass of magnesium in the sample:
mass Mg = moles Mg * molar mass Mg
mass Mg = 0.002687 mol * 24.305 g/mol
mass Mg = 0.06544 g
5. Calculate the percent by mass of magnesium in the sample:
percent Mg = (mass Mg / total mass of sample) * 100%
percent Mg = (0.06544 g / 0.1256 g) * 100%
percent Mg = 52.03%
Therefore, the percent by mass of magnesium in the ore sample is approximately 52.03%.
A 0.1256 g sample of an ore was analyzed for a magnesium content by reacting with hydrochloric acid solution if the sample requires 26.24 ml of a 0.1025 MA aqueous solution of HCL to react all the magnesium in a sample what is the percent by mass of magnesium in a sample
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