Question

5. Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of
oxygen gas would be required to react completely with 3 g of hydrogen gas?
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Answer 1

Answer:

if for 1 g of HYDROGEN ,it is 8 g of OXYGEN.

then for 3 g of HYDROGEN, it is 8 × 3 = 24 g of OXYGEN.

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Explanation: