Answer:
Option D will be the answer.
Answer: 2755.2 g of 
will be produced from 24.6 mol of haematite.
Explanation:
The balanced chemical equation is:
According to stoichiometry :
1 mole of 
produce = 2 moles of
Thus 24.6 moles of will produce=
of
Mass of 
Thus 2755.2 g of will be produced from 24.6 mol of haematite.
Uhm I think 5 sorry if I’m wrong
Answer: -
H₂ will diffuse the fastest.
Explanation: -
According to Graham's Law of Diffusion
The rate of diffusion is inversely proportional to the square root of it's density or molar mass. So the lower the molar mass faster the rate of diffusion.
Molar mass of Ne = 20 g / mol
Molar mass of CH₄ = 12 x 1 + 1 x 4 = 16 g /mol
Molar mass of Ar = 40g / mol
Molar mass of H₂ = 1 x 2 = 2 g / mol
Thus H₂ will diffuse the fastest.
Answer:
the first option is the correct answer
