Which type of system must exist for chemical equilibrium

1. Shared system

2. closed system

3. Isolated system

4. Open system

Ionic solids will most likely dissolve in (1) H2O (l), which is a polar solvent (2) H2O (l), which is a nonpolar solvent (3) CCl4 (l), which is a polar solid (4) CCl4 (l), which is a nonpolar solvent

Water exist as a liquid between 0 and 100 Celsius. a. True b. False

Some polymers are elastic because they are made of a. carbon. c. sugar and alcohol. b. phosphate ladders. d. cross-linked chains.

In many of the steps in the lab, a mixture was centrifuged and then decanted. In general terms, what is accomplished by these steps? In what kind of situation would these steps not be able to separate two compounds?

The ideal gas model assumes that ideal gas particles: (select all that apply) take up a lot of volume take up negligible volume are attracted to other gas particles are not attracted to other gas particles

A salt shaker filled with 17.0g sodium chloride contain how many moles?

When a radioactive decay occurs what is released? A. Only protons and neutrons B. Only electrons C. Protons/Neutrons, beta particle, gamma ray D. Only gamma rays

How is the process of scientific inquiry and the design process similar and how they are different.

Provide an explanation at the subatomic level to explain why different colors are observed for different metal salts.

Indicate whether the following statements describe the primary, secondary, tertiary, or quaternary protein structure. (More than one can apply). A. R groups interact to form disulfide bonds or ionic bonds. B.