Answer to Question #117524 in General Chemistry for Samantha

Question

What is the mass in grams of 8.05 moles of oxygen atoms?
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Answer 1

Molar mass = mass in grams ÷ mole of substance

Mass in grams = molar mass × moles of substance

Molar mass of oxygen atoms = 16g/mol

Number of moles = 8.05 mols

Thus, mass in grams = 16×8.05

                                 = 128.8 grams