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natis one Tunction or activated charcoal? A. It increased the density of the D.

ID: 1028664 • Letter: N

Question

natis one Tunction or activated charcoal? A. It increased the density of the D. It reduces the flammability ofa sample It removes impurities It acts a catalyst solvent B. C. E. It alters the boiling point of the mixture 12. What is the difference between capillary melting point and the physical chemists' definition of melting point. A. Capillary is the temperature at which the sample begins freezing which physical chemists define it as the temperature at which a sample melts. Capillary is the temperature at which solid and liquid phase exist in equilibrium while physical is the range at which a sample melts B. Capillary is the range at which a sample melts while physical is the temperature at which solid and liquid exist in equilibrium There is no difference in the two definitions. C. D. 13. The piece of glassware that produces a liquid from a gas during distillation is called: a. Fractionating column b. Condensing tube Receiving flask Round bottom flask c. d. 14. The piece of glassware that performs the equivalent of many micro-distillations is called: called: a. Fractionating column b. Condensing tube Receiving flask Round bottom flask c. d.

Explanation / Answer

12. ans-C . capillary is the range at which a sample melts while physical is the temperature at which solid and liquid exist in an equilibrium.

13. ans-b . condensing tube.

14. ans- a. fractionating column.