which is the following has the highest number of moles
a. 98 g of H2so4
b. 80 g of NaOH
c. 26g of He
d. 51 g of NH3
Answers
Answered by
1
we have to check, which of the following has the highest number of moles ?
a. 98g of H₂SO₄
b. 80g of NaOH
c. 26g of He
d 51g of NH₃
solution : we know,
- number of moles of compound = given weight/molecular weight
- number of moles of element = given weight/atomic weight
let's find no of moles of all given substances.
a. given weight = 98g
molecular weight of H₂SO₄ = 98 g/mol
so, no of moles of H₂SO₄ = 98/98 = 1
b. given weight = 80g
molecular weight of NaOH = 40g/mol
so, no of moles of NaOH = 80/40 = 2
c. given weight = 26g
atomic weight of He = 4g/mol
so, no of moles of He = 26/4 = 6.5
d. given weight= 51g
molecular weight of NH₃ = 17 g/mol
so, no of moles of NH₃ = 51/17 = 3
Therefore option (c) 26g of He, has the highest number of moles.
Similar questions