1.

Convert the following number "molecules"//"atoms" into number of moles: 3.011 xx 10^(25) molecules of helium

Answer»

Solution :NUMBER of moles = `("GIVEN number of PARTICLES")/("AVOGADRO number")`
`=(3.011 xx 10^(25))/(6.022 xx 10^(23))`
`=0.5 xx 10^(2)`
= 50 mole helium


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