Question

The molecular weight of vitamin C , C6H8O6 is 176.12 grams over mol

What is the mass in grams of 0.000142 mole of vitamin C Express the answer using three significant figures

Answer 1

0.0250 g.

Step-by-step explanation:

∵ no. of moles (n) = mass / molar mass.

∴ mass of Vitamine C = (n)(molar mass) = (0.000142 mol)(176.12 g/mol) = 0.02501 g = 0.0250 g. "three significant figures"