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
Chemistry, 22.06.2019 00:00
What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17
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Chemistry, 22.06.2019 06:30
What effect might melting sea ice have for people who live in coastal areas?
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Chemistry, 22.06.2019 12:00
In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =
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Chemistry, 22.06.2019 14:00
Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *
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Question 8 unsaved mrs. johnson's science class perform an experiment. they combine two substances t...
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