Question

Hydrogen gas and nitrogen gas react to give amonia gas. how many molecules are needed to fully comsume 5.943 moles of nitrigen?

Answer 1

Balanced chemial reaction is

3H2 + N2 → 2NH3

According to balanced chemical equation 3 moles of H2 react with 1 mole of N2 molar ratio between H2 to N2 is 3:1 therefore to react with 5.943 moles of N2 required H2 = 5.943 X 3 = 17.829 moles

17.829 moles of H2 require to consume fully nitrogen

According to avogadro's law 1 mole of substance contain 6.022 X 1023 molecules therefore

No. of molecules = no. of moles X 6.022 X 1023

NO. of H2 molecules = 17.829 X 6.022 X 1023 = 1.07366 X 1025 molecules

1.07366 X 1025 molecules of H2 require to consume 5.943 moles of N2