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Question
Which of the following figures does not represent 1 mole of dioxygen gas at STP?
(i) 16 grams of gas
(ii) 22.7 litres of gas
(iii) 6.022 × 1023 dioxygen molecules
(iv) 11.2 litres of gas
Solution
(i) 16 grams of gas
(iv) 11.2 litres of gas
Explanation:
16 grams of gas and iv. 11.2 litres of gas
1 mole of dioxygen at STP occupies = 22.4 L
= molar mass of dioxygen = 32 g
= contain 6.023 × 1023 molecules of oxygen gas
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