Calculate the number of moles in 52 g of helium gas ?

Given mass = 52g

Molar mass of Helium = 4 g

Number of moles = Given mass / Molar mass

= 52 / 4

= 13 moles

So, 52g helium contains 13 moles.

  • 75

No of moles = ?

given mass= 52 g

Helium gas means he2

No of moles = given mass / molar mass

Molar mass of helium gas is =4+4 ( as it is helium gas )

So no of moles = 52 / 8

No of moles = 6.5 mol

  • -4

no.of moles= given mass/gram atomic mass

given mass= 52g

gram atomic mass= 2*52g (the atomic mass of helium=2)

=104g

this implies,

52/104=no. of moles

0.5 mol

hope it's helpful...

  • -15
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