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Can someone describe the orbital model and the 1932 James Chadwick model?
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How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.
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How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.
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Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)
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Can someone describe the orbital model and the 1932 James Chadwick model?...
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