What is the mass in grams of 0.250 mol of the common antacid calcium carbonate? A) 4.00 × 10² g B) 25.0 g C) 17.0 g D) 4.00 × 10^-2 g E) 2.50 × 10^-3 g

Question

Quizplus · Accepted Answer

The molar mass of calcium carbonate is 100.1 g/mol (40.1 g/mol for calcium, plus 12.0 g/mol for carbon, plus 48.0 g/mol for three oxygen atoms). 
To calculate the mass in grams of 0.250 mol of calcium carbonate, we can use the following equation:

mass = molar mass x number of moles

mass = 100.1 g/mol x 0.250 mol

mass = 25.0 g

Therefore, the mass in grams of 0.250 mol of calcium carbonate is 25.0 g, so the answer is B.

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