Question

2. (i) Hydrogen and oxygen combine (3)
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?
(ii) Write down the formula of:
(i) Sodium oxide (ii) Aluminium chloride​

Answer 1

Answer:

(1)It is given that the ratio of hydrogen and oxygen by mass to form water is 1:8. Then, the mass of oxygen gas required to react completely with 1g of hydrogen gas is 8g. Therefore, the mass of oxygen gas required to react completely with 3g of hydrogen gas is 8 × 3g = 24 g.

Explanation:

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Answer 2

Explanation:

2. (i) 1 g of hydrogen reacts with = 8 g of oxygen

∴ 3 g of hydrogen reacts with = 8 × 3 = 24 g of oxygen

Thus, 24 g of oxygen gas would be required to react completely with 3 g of hydrogen gas.

(ii) attachment is on uppp

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