According to the law of conservation of mass, in any chemical reaction, the mass of reacting substances at the start of reaction will be the same as the mass of the products at the end.
We can see that
Then one of the reactants is in excess. As this reactant has the smell of rose and it is left over the liquid, then the reactant in excess is X.
Then the law of conservation of mass will be written as:
where x- is mass of gas X left after the reaction is completed.
Find mass of gas X that is required to react with 4.53 g of X:
So, we need 19.44 g of X to completely react with 4.53 g of Y.
And we have 16 g of X to completely react with z g of Y.
Solve the proportion:
Answer:3.73 g of Y