Question

which has more number of atoms 100g
od 100g of iron justify your answer.(atomic mass of sodium =23u, atomic mass of iron=56u
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Answer 1

Answer:

Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)? Therefore, 100 grams of sodium contain more number of atoms than 100 grams of iron.

Answer 2

Explanation:

Given, mass of Na =100g; molar mass of Na=23g

no. of moles of Na=100/23=4.347

no. of atoms of Na= 4.35×Na

(Avagardro no.)

Given, mass of Fe =100g ; Molar mass of Fe=56g

no. of moles of Fe= 100/56= 2.10

no. of atoms of Fe= 2.10× Na

(Avagardro no.)

SO, Na has the more number of atoms..