Questions from General Chemistry

Q: Describe a simple mercury barometer. How is such a barometer used

Describe a simple mercury barometer. How is such a barometer used to measure the pressure of the atmosphere?

Q: On the basis of the smaller units that make up the crystals

On the basis of the smaller units that make up the crystals, cite three types of crystalline solids. For each type of crystalline solid, give an example of a substance that forms that type of solid.

Q: How do ionic solids differ in structure from molecular solids? What

How do ionic solids differ in structure from molecular solids? What are the fundamental particles in each? Give two examples of each type of solid and indicate the individual particles that make up th...

Q: Describe in general terms the structure of ionic solids such as NaCl

Describe in general terms the structure of ionic solids such as NaCl. How are the ions packed in the crystal?

Q: Ionic solids are generally considerably harder than most molecular solids. Explain

Ionic solids are generally considerably harder than most molecular solids. Explain.

Q: When dry ammonia gas (NH3) is bubbled into a 125

When dry ammonia gas (NH3) is bubbled into a 125-mL sample of water, the volume of the sample (initially, at least) decreases slightly. Suggest a reason for this.

Q: For each of the following pairs, indicate which species is smaller

For each of the following pairs, indicate which species is smaller. Explain your reasoning in terms of the electron structure of each species. a. H or H- b. N or N3- c. Al or Al3+ d. F or Cl

Q: For each of the following pairs, indicate which species is larger

For each of the following pairs, indicate which species is larger. Explain your reasoning in terms of the electron structure of each species. a. Mg2+ or Mg b. Ca2+ or K+ c. Rb+ or Br- d. Se2- or S...

Q: For each of the following pairs, indicate which is smaller.

For each of the following pairs, indicate which is smaller. a. Fe or Fe3+ b. Cl or Cl- c. Al3+ or Na+

Q: For each of the following pairs, indicate which is larger.

For each of the following pairs, indicate which is larger. a. I or F b. F or F- c. Na+ or F-