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10. Which of the following is the correct calculation and answer to determine the mass of 4 moles of CH2O?

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A. 4 mol x 16 g/mol = 64 g
B. 4 mol / 16 g/mol = 0.25 mol
C. 30 g/mol / 4 mol = 7.5 mol
D. 4 mol x 30g/mol = 120 g

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D. 4 mol x 30g/mol = 120 g

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