Are these data sets on chemical changes consistent with the law of conservation of
a. A 7.5-g sample of hydrogen gas completely reacts with 60.0 g of oxygen gas to
form 67.5 g of water.
b. A 60.5-g sample of gasoline completely reacts with 243 g of oxygen to form 206
g of carbon dioxide and SS g of water.

Question

25-08-2022
Chemistry

contestada

Are these data sets on chemical changes consistent with the law of conservation of
a. A 7.5-g sample of hydrogen gas completely reacts with 60.0 g of oxygen gas to
form 67.5 g of water.
b. A 60.5-g sample of gasoline completely reacts with 243 g of oxygen to form 206
g of carbon dioxide and SS g of water.

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Eduard22sly Eduard22sly · Answer 1 · 2022-08-26T18:40:16+02:00

The data set on chemical changes consistent with the law of conservation of mass is:

The reaction of 7.5 g of hydrogen and 60 g of oxygen to produce 67.5 g of water (Option A)

What is a chemical equation?

Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.

The reactants are located on the left side while the products are located on the right side.

Reactants —> Products

The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.

How to verify the law of conservation of mass

A. Reaction of hydrogen with oxygen

Hydrogen + Oxgen = Water

7.5 + 60 = 67.5

67.5 g = 67.5 g

Since the mass of the reactants and products are the same, then the reaction supports the law of conservation of mass

B. Gasoline + oxygen = carbon dioxide + water

60.5 + 243 = 206 + 55

303.5 g ≠ 261 g

Since the mass of the reactants and products are not the same, then the reaction do not support the law of conservation of mass

From the above illustrations, the following conclusions were made:

Option A is consistent with the law of conservation of mass.
Option B is not consistent with the of conservation of mass.

Learn more about chemical equation:

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