Chemistry, 30.12.2021 14:00 Questions138
Which gem has an unusual dark brown or black color when it occurs as crystals with an Al impurity in pegmatites rich in silica
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Chemistry, 22.06.2019 22:30
Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility
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Chemistry, 23.06.2019 01:00
Aman applies a force of 500n to push a truck 100m down the street how much does he do?
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Chemistry, 23.06.2019 08:00
Why is it important for scientists to review and repeat the work of other scientists? 1.a scientific theory must be tested three times before it is proven. 2.the scientific method only applies to repeated experiments. 3.an experiment may have had errors that the scientists didn't recognize. 4.the results of individual scientists may be influenced by bias. 5.an experiment must be performed twice before the data can be analyzed.
Answers: 3
Which gem has an unusual dark brown or black color when it occurs as crystals with an Al impurity in...
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