Suppose an unknown compound XY has an X-to-Y mass ratio of 4.0.If decomposition of compound XY gives 12.0 grams of X,then how many grams of Y must form?

Question

Quizplus · Accepted Answer

Given the X-to-Y mass ratio of 4.0, for every 4 grams of X, there is 1 gram of Y. If the decomposition gives 12 grams of X, then the amount of Y formed would be $12 \, \text{grams of X} \times \frac{1 \, \text{gram of Y}}{4 \, \text{grams of X}} = 3 \, \text{grams of Y}$.

Suppose an Unknown Compound XY Has an X-To-Y Mass Ratio