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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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- 2-phenylethylbromide when heated with NaOEt, elimination takes place.
- The hybridisation of carbons of C-C single bond of HC ≡C-CH =CH₂ is
- Two different gases enclosed in different flasks A and B at same temperature and pressure
- When 25g of Na₂SO₄ is dissolved in 10³ kg of solution,its concentration will be
- An ideal gas, obeying kinetic theory of gases can not be liquefied, because
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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