Which has more number of atoms. 100g of n2 or 100 g of nh3?
Answers
=> Mole of N2 = 100/2 x 14 = 100/28 Moles
No. of molecules or atoms = Moles x Avogadro's No.
=> No. of Molecules of N2 = 2 x 100/28 x 6.022 x 10^23
= 43.01 x 10^23 Molecules
Same as,
Moles of NH3=Given mass/Molar mass
=> Moles = 100/17
No. of Molecules or atoms= Moles x Avogadro's No.
=> No. of Molecules = 4 x 100/17 x 6.022 x 10^23
= 141.69 x 10^23 Molecules
Hence, We observe that NH3 has more No. of molecules than of N2.
Be Brainly
Answer :
Given :
Weight of N₂= 100g
weight of NH₃ = 100g
Molecular mass of N2=28u
Molar mass of N2=28g
Molecular mass of NH3 = [14+3x1] =17u
molar mass of NH3=17g
Calculating number of atoms In 100g of N2:
1mole of N2[28 g] Contains -------------> 6.022 x 10²³ moelcules
100g contains ---------------->?
Number of N2 molecules = 6.022 x 10²³x100/28=21.5 moleules
Number of N2 atoms =2x21.5=43.0 x 10 ²³
Therefore 100 g of N2 Contains 43x10²³ atoms
Calculating Number of atoms in NH3:
1mole of NH3[17 g] Contains -------------> 6.022 x 10²³ molecules
100g contains ---------------->?
Number of molecules of NH3 = 6.022x10²³ x100/17
=35.4 x 10²³ mloecules
As NH3 contains 4 atoms = 4x 35.4 =141.6 x 10²³ atoms
∴ 100g of NH3 contains =141.6 x 10²³ atoms
Conclusion:
∴100g of NH3 has more atoms than 100g of N2 .