For which of the following activities might you want to hire a chemist?
Answer: D. testing a rock sample for gold content
Which of the following procedures involves a physical change in one of the substances?
Answer: C. separating a salt solution by evaporating the water
Beta particle in the reaction
Answer: Atoms lose energy as a gas changes to a solid.
Explanation:
Answer:
1)magnesium nitrate +hydrogen
2)calcium chlorine+hydrogen
3)zinc sulfate +hydrogen
Explanation:
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Answer:
The answer to this question has been described in details on the screenshots attached to this question.
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