Chemistry

Given a 10.0g sample of MgCO3*5H2O, what weight of anhydrous magnesium carbonate can be obtained after driving off the water? The GFM of the sample is 174.3amu. Now.. how do I go about finding the weight of the magnesium carbonate?

Answers



The weight of magnesium carbonate can be calculated by determining the molar mass of magnesium carbonate and then dividing that by the molar mass of the sample.

The molar mass of anhydrous magnesium carbonate is 84.3 g/mol. This means that for every 1 mol of anhydrous magnesium carbonate, there is 174.3 g of the sample. Therefore, dividing 174.3 by 84.3 will give us the weight of anhydrous magnesium carbonate that can be obtained after driving off the water.

Therefore, the weight of anhydrous magnesium carbonate that can be obtained after driving off the water would be 2.07 g.

Answered by harrisemily

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