MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
Which of the following would occupy 22.4 litres at S.T.P.? (1) 32g of oxygen gas (2) 2 moles of hydrogen gas (3) 6.022 x 1023 molecules of ammonia
Topic: Mole concept, gas volumes and stoichiometry
Previous-year question practice database
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Answer
Exam answer
(b) 1 & 3.
Explanation
32 g O₂ and 6.022 × 10²³ NH₃ molecules are each one mole and occupy 22.4 L at STP.
In words
1 & 3.
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