Chemistry

Chemistry, 25.10.2019 11:43, melidacampos12

Do substances react by mass? yes or no explain

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Chemistry, 05.07.2019 22:30, arianawelsh123l

Mrs. johnson's science class perform an experiment. they combine two substances that react with lots of fizzing and bubbling. the class determines the mass of the substances before and after the experiment and find that the substances have less mass after the experiment. hannah wants to know why the experiment didn't obey the law of conservation of mass, but chris says it did. who is right and why? hannah is right because the class may have made an error in determining the mass of the substances. chris is correct because the reactants and products do not have to have the same mass, but they do have to weigh the same. hannah is right because the mass of the reactants was different than the mass of the products. chris is right because some of the mass of the reactants escaped as gas.

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Biology, 05.07.2019 22:30, kellyrasmussen8189

Ineed mrs. johnson's science class perform an experiment. they combine two substances that react with lots of fizzing and bubbling. the class determines the mass of the substances before and after the experiment and find that the substances have less mass after the experiment. hannah wants to know why the experiment didn't obey the law of conservation of mass, but chris says it did. who is right and why? question 8 options: hannah is right because the class may have made an error in determining the mass of the substances. chris is right because some of the mass of the reactants escaped as gas. chris is correct because the reactants and products do not have to have the same mass, but they do have to weigh the same. hannah is right because the mass of the reactants was different than the mass of the products.

Answers: 1

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Chemistry, 05.07.2019 23:00, smilingntn33p7pqpp

Question 8 unsaved mrs. johnson's science class perform an experiment. they combine two substances that react with lots of fizzing and bubbling. the class determines the mass of the substances before and after the experiment and find that the substances have less mass after the experiment. hannah wants to know why the experiment didn't obey the law of conservation of mass, but chris says it did. who is right and why? question 8 options: chris is correct because the reactants and products do not have to have the same mass, but they do have to weigh the same. chris is right because some of the mass of the reactants escaped as gas. hannah is right because the class may have made an error in determining the mass of the substances. hannah is right because the mass of the reactants was different than the mass of the products.

Answers: 2

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Physics, 22.07.2019 21:50, meliac

When two substances react chemically to produce a new substance, what is true of the mass of the two substances compared to the mass of the new substance? select one: a. the mass of the two substances is less than the mass of the single substance. b. they have the same mass. c. the mass of the two substances is more than the mass of the single substance.

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