Question
If 3.5 g of element X reacts with 10.5 g of element Y to form the compound X Y, what is the percent by mass of element X in the compound? The percent by mass of element Y?
Step 1
This is done by adding the mass of element X and the mass of element Y. \[Total\ mass\ of\ XY = mass\ of\ X + mass\ of\ Y = 3.5g + 10.5g = 14.0g\] Show more…
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