Question

Are these data sets on chemical changes consistent with the law of conservation of mass? (a) $\mathrm{A} 7.5-\mathrm{g}$ sample of hydrogen gas completely reacts with $60.0 \mathrm{~g}$ of oxygen gas to form $67.5 \mathrm{~g}$ of water. (b) $A 60.5-g$ sample of gasoline completely reacts with 243 $g$ of oxygen to form $206 \mathrm{~g}$ of carbon dioxide and $88 \mathrm{~g}$ of water.

          Are these data sets on chemical changes consistent with the law of conservation of mass?
(a) $\mathrm{A} 7.5-\mathrm{g}$ sample of hydrogen gas completely reacts with $60.0 \mathrm{~g}$ of oxygen gas to form $67.5 \mathrm{~g}$ of water.
(b) $A 60.5-g$ sample of gasoline completely reacts with 243 $g$ of oxygen to form $206 \mathrm{~g}$ of carbon dioxide and $88 \mathrm{~g}$ of water.

Added by Sharon W.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Madhur L

02/14/2023

Step 1

In this case, the total mass of the reactants is $7.5g + 60.0g = 67.5g$ and the total mass of the product is $67.5g$. Since the total mass of the reactants equals the total mass of the products, this data set is consistent with the law of conservation of mass. Show more…

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Are these data sets on chemical changes consistent with the law of conservation of mass? (a) $\mathrm{A} 7.5-\mathrm{g}$ sample of hydrogen gas completely reacts with $60.0 \mathrm{~g}$ of oxygen gas to form $67.5 \mathrm{~g}$ of water. (b) $A 60.5-g$ sample of gasoline completely reacts with 243 $g$ of oxygen to form $206 \mathrm{~g}$ of carbon dioxide and $88 \mathrm{~g}$ of water.