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The number of oxygen atoms in 4.4g of CO₂ is
Options
(a) 1.2 x 10²³
(b) 6 x 10²²
(c) 6 x 10²³
(d) 12 x 10²³
Correct Answer:
1.2 x 10²³
Explanation:
Atomic Mass of C=12
Atomic Mass of O=16
mol.wt of CO₂=12 + (16 x 2) = 44
4.4 g CO₂ = 4.4/44 = 0.1 mol CO₂
=6.02 x 10²² molecules
=2 x 6 x 10²² atoms of O
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The neutralisation of a strong acid by a strong base liberates an amount
- If the gas at constant temperature and pressure expands, then its
- Which of the following halides is the most stable
- In a metal oxide, there is 20% oxygen by weight. its equivalent weight is
- If pH value of a solution is 3 and by adding water, it becomes 6,
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Basic Concepts of Chemistry (94)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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