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Chemistry, 22.06.2019 17:30
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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Chemistry, 23.06.2019 00:00
How many peaks will be present in a mass spectrum for brcl?
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Chemistry, 23.06.2019 19:30
Which of the following is true about science? select one: a. it is not influenced by social conditions. b. it is not determined by external local factors. c. political conditions are unable to influence it. d. economic concerns may prevent it from solving problems.
Answers: 1
Chemistry, 24.06.2019 00:30
S2+16.8= 220 4 calculate the atom economy to form aluminium chloride from aluminium in this reaction. 2al + 3cl2 - 2alci
Answers: 1
according to the law of energy conservation, the total amount of energy is constant, then why does t...
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