Question

Which of the following has the same number of moles as in 398 grams of CuSO₄?

a.

2 grams of hydrogen

b.

40 grams of oxygen

c.

35 grams of nitrogen

d.

58.5 grams of Sodium chloride

Answer: (b).40 grams of oxygen

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Q. Which of the following has the same number of moles as in 398 grams of CuSO₄?

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