Determine the mass of H3 PO4 if the amount of substance is known as 0.1 mol.

To find the mass of a substance, if its amount is known, we use the following formula:
m = M • n, where m is the mass, M is the molar mass, n is the amount of substance, we substitute the values
m = 98 • 0.1 = 9.8 grams



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