Chemistry - Mole Concept Question with Solution | TestHub
ChemistryMole ConceptAtomic mass/Average Atomic Mass/Average Molecular MassMedium2 minQB
ChemistryMediumsingle choice
A certain compound has the molecular formula X₄O₆. If 10.0 gm of the compound contains 5.71 gm of X, the atomic mass of 'X' is
Options:
Answer:
A
Solution:
Weight of O = 10 − 5.71 = 4.29 g. Moles of O = 4.29/16 = 0.268. In X₄O₆, moles of X = (4/6) × moles of O = (4/6) × 0.268 = 0.179. Atomic weight of X = 5.71/0.179 ≈ 32.
Stream:JEESubject:ChemistryTopic:Mole ConceptSubtopic:Atomic mass/Average Atomic Mass/Average Molecular Mass
⏱ 2mℹ️ Source: QB
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