Evidence shows that interstellar bodies are moving away from earth, some faster than others, which best suggests that the universe a) is shrinking. b) is expanding. c) was not formed by a big bang. d) has always been the same size. our solar system is in the milky way galaxy. what shape is this galaxy? a) oval b) rectangular c) spiral d) triangular our solar system lies in a) the central ring of the milky way. b) one of the spiral arms of the milky way. eliminate c) in the galactic center of the milky way. d) outside the spiral arms of the milky way.
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Chemistry, 22.06.2019 07:30, bbyniah123
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
Chemistry, 22.06.2019 15:00, NatalieKnows
Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?
Answers: 1
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