Question

a molecule of a compound contains 20% Sulphur and 40% Oxygen by mass, what would be the minimum molecular mass of the compound?

Answer 1

Answer:

20g of sulpher is present in 100g

then,32g of sulpher is presnt in 160g

so,mass of sulpher in the compound is 160g.

Now, most of the oxides with sulpher gives the ratio of 1:3(ratio of molecules)

So, if mass of sulpher is 160g mass of oxygen is 160x3=480g

therefore,mass of the compound 160+480g=640g.