Chemistry, 17.12.2020 17:20 batmanmarie2004
Which of the following best describes a galaxy?
A. a particle of debris in the solar system that does not act as a satellite of any planet.
B. a visible body of liquid or frozen crystal droplets suspended above a planetary surface
C. a massive system of stars, gas, dust, and dark matter bound together by gravity
D. The visible path of a meteoroid as it enters Earth's atmosphere
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If a straight-chain hydrocarbon is a gas at room temperature, how many carbon atoms will it have? a. 6 carbon atoms b. 12 carbon atoms c. 24 carbon atoms d. 3 carbon atoms
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Ascientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. which term most likely describes what she is measuring?
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The equation below shows the reaction of zinc with hydrochloric acid (hcl). zn (s) + 2 hcl (aq) —> zncl2 (aq) + h2 (g) what will happen if the concentration of hcl is decreased? a. more zncl2 will be produced. b. the reaction rate will slow down. c. the hydrochloric acid will become more acidic. d. the reaction will produce water instead of hydrogen gas.
Answers: 1
Which of the following best describes a galaxy?
A. a particle of debris in the solar system that do...
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