Convert 12 gram of oxygen gas into mole

Asked by admin @ 29/08/2021 in Chemistry viewed by 325 People

Convert into moles 12 G of Oxygen gas

Answered by admin @ 29/08/2021

Hi !

a)
Given mass = 12 g
Molar mass of oxygen gas ( O₂) = 2 x 16 = 32 g
No: of moles = given mass / molar mass
= 12/32 = 0.375 moles
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b)
Given mass = 20 g
Molar mass of water (H₂O) = 2 x 1 + 16 = 18 g
No: of moles = given mass / molar mass
= 20/18 = 1.11 moles

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c)
Given mass = 22 g
Molar mass of carbon dioxide (CO₂) = 12 + 2 x 16 = 44 g
No: of moles = given mass / molar mass
= 22/44 = 0.5 moles
C

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