(Atomic masses used are C = 12.0 g mol–1, O = 16.0 g mol–1, H = 1.01 g mol–1, Cu = 63.5 g mol–1,)

1. How many moles are there in 5.0 g of methanol (CH3OH)?
How many molecules of CuCO3 would weigh 9.0 g?
How many moles would 3.0 g of cyclohexane (C6H12) contain?
How much would 4.00 moles of benzene weigh?
What is the mass of 1000 atoms of calcium?

Question

03-12-2022
Chemistry

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(Atomic masses used are C = 12.0 g mol–1, O = 16.0 g mol–1, H = 1.01 g mol–1, Cu = 63.5 g mol–1,)

1. How many moles are there in 5.0 g of methanol (CH3OH)?
How many molecules of CuCO3 would weigh 9.0 g?
How many moles would 3.0 g of cyclohexane (C6H12) contain?
How much would 4.00 moles of benzene weigh?
What is the mass of 1000 atoms of calcium?

Sagot :

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