Question

If 3.253 × 1023 molecules have a mass of 29.82 grams, what is the molar mass of this substance?

Answer 1

Answer:

No. of molecules = Moles*Avogadro's Number

= 3.253*10^23 = x*6.022*10^24

= 0.54*10^-1 = x

= 0.054 = x = Moles

If 29.82 g of a substance is equal to 0.054 moles, then, the molar mass must be = (29.82/0.054) g/mol

= 552.22 g/mol

Hope this helps.