Question

How many moles of NO2 are there in 1.81⋅1024 molecules of NO2?

Answer 1

Hi there,

Number of moles equal mumber of units ÷ avogadro's no

n= Nu÷ NA

n= 1.81×10^24 ÷ (6.02×10^23)

n= 3 mols

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