Question

Calculate the number of moles in 64.2 g of sulfur molecules (S8).
( Ar value : S = 32.1 )

Answer 1

Answer:

No. Of moles = given weight / molecular weight

Given weight = 64.2

Molecular weight = 32.1*8= 256.8

No. Of moles = 64.2/256.5

= 0.25 moles

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Answer 2

Answer:0.25

Explanation:

32.1 of sulfur multiply by 8=256.8

number of moles=mass/molecular mass

                            64.2/256.8=0.25