Question

moles of protons in 20g of so3?

Answer 1

Answer:

Avogadros constant = 6.023x10^23 mol^-1

Mr of oxygen = 16

Mr of Sulphur = 32

1. moles (mol) = mass (g) / mr (g/mol)
2. moles = 20/(32+16+16+16) = 0.25; moles of SO3.
3. If you want the weight of protons to equal 20g. moles = 20/1 = 20 moles of H.