Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptLaws of Chemical CalculationsHard2 minPYQ_2022

ChemistryHardsingle choice

A certain metal sulphide, $M S_{2}$ , is used extensively as a high temperature lubricant. If $MS_{2}$ is $40.06%$ by mass sulphur, metal $M$ has atomic mass.

Options:

Answer:

Solution:

$M S_{2} = M + 32 \times 2 = M + 64$ $%$ of sulphur $= (\frac{64}{M + 64}) \times 100 = 40.06$ $M + 64 = \frac{6400}{40.06}$ $M + 64 = 160$ $M = 160 - 64 = 96$ u

Stream:BITSATSubject:ChemistryTopic:Mole ConceptSubtopic:Laws of Chemical Calculations

⏱ 2mℹ️ Source: PYQ_2022

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