Question

wood's metal contains 50% bismuth 25% lead 12.5% tin and 12.5% cadium by mass. what is the mole fraction of tin?(bi= 209 , pb= 207, sn= 119 and cd= 112)​

Answer 1

Answer:

1/5 ,, I think so

Explanation:

50 gm bismuth in 100 gm sol.

25 gm lead in 100 gm sol .

12.5 gm tin in 100 gm sol .

12.5 gm cadmium in 100 gm sol.

then now we will find their moles

bismuth= 50gm / 209= 0.2 mol

lead= 25gm / 207= 0.1mol

tin =12.5 / 119 = 0.1mol

cadmium = 12.5 / 112= 0.1 mol

now add all the mole and put in the equation

= tin mole / total mole

= 0.1 mol / 0.5 mol

answer is 1/ 5 or 0.2

if answer is not right than I think take that solute mass 1000gm instead of 100 gm

or

message me