Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptMiscellaneous/MixedEasy2 minPYQ_2020
ChemistryEasysingle choice

Which of the following contains same number of atoms as 20 g of calcium?

Options:

Answer:
B
Solution:

Number of atoms in 20 gCa=weightAtomic weight×NA
=2040×6.023×1023=3.0115×1023atoms
A. Number of atoms in 24 gMg=2424×6.023×1023=6.023×1023atoms
B. Number of atoms in 12 gCarbon=1212×6.023×1023=6.023×1023atoms
C. Number of atoms in 8 gOxygen=816×6.023×1023=3.0115×1023atoms
D. Number of atoms in 16 gOxygen=1616×6.023×1023=6.023×1023atoms

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Mole ConceptSubtopic:Miscellaneous/Mixed
⏱ 2mℹ️ Source: PYQ_2020

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