Chemistry, 27.01.2020 19:31 k123loveme
Which statement about a chemical reaction is true? it occurs only at low temperatures. it occurs only at high temperatures. it occurs whenever a physical change takes place. it occurs whenever a chemical change takes place.
Answers: 2
Chemistry, 22.06.2019 15:00, raeprince9213
Which of the following is the correct formula for copper (i) sulfate trihydrate? cuso4 · 3h2o cuso4(h2o)3 cu2so4(h2o)3 cu2so4 · 3h2o
Answers: 1
Chemistry, 22.06.2019 17:30, llamasking
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)
Answers: 2
Chemistry, 23.06.2019 01:00, carson9373
Wind and moving water provide energy. chemical mechanical thermal none of the above
Answers: 1
Which statement about a chemical reaction is true? it occurs only at low temperatures. it occurs on...
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