Question

1. Calculate the mass in grams of 0.17 mole Hydrogen sulphide, H2S.

(Atomic masses: H=1 u, S=32 u)

2. Show by means of calculations that 5 moles of Carbon dioxide and 5 moles of Water don’t have the same mass. How much is the difference in their masses?

3. Calculate the mole ratio of 240 g of calcium and 240 g of magnesium.

(Ca=40 u, Mg=24 u).

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Answer 1

Answer:

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