indicated by the #1 4 (30 pts) Caculate the R value for the substance 5. (S pts)

Question

indicated by the #1 4 (30 pts) Caculate the R value for the substance 5. (S pts) Which of the following information about a chemical can be found on an MSDS? A Ingredients B. Health hazards C. Spill/leak information D. All of the above 6. (S pts) Which of the following types of chemicals are considered to be health hazards? A. Toxins C. D. Sensitizers All of the above 7. (5 pts) When an emergency occurs A. report the nature and location to your instructor B. evacuate at once without notifying anyone C. telephone friends in other labs D. move injured persons E. open all doors as you evacuate 8.(5pts) Thin Layer Chromatography is generally used as a qualitative analytical technique for A Determining the number of components in a mixture B. Checking the purity of a compound C. Following the course of a reaction D. All of the above

Explanation / Answer

4 image is not clear.

5 D all of these above

6 D all of these above

7 D Move injured person

8 D all of these above

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