Ch. 5 & 11 conversion factor, light, & AO test [75 points] Chemistry

For problems involving calculations, show your work in an organized manner, include any relevant formula / equation / conversion factor, proper units in your work / answer, and the proper number of significant figures in your answer.

 

1. Write the number in scientific notation without changing the # significant figures. [no leeway in # sig. fig.; 6 points]

a. 0.00108 = _______________

b. 126.30 * 10 -5 = _______________

c. 1.0 / 4.0 = ______________

 

2. Fill-in the blank; use the proper number of significant figures in your answer [no leeway in # sig. fig.; 4 points]

a. 22.0 ÷ 7.0 = __________

b. 159.274 + 13.25 = ____________

 

3. Fill-in the blank. [15 points]

a. 5987.0 mm = ___ m

b. 2.7 m 2 = ___ cm 2

c. 86.3 mL / minute = ___ µL / second

4. The density of rubbing alcohol is 0.85 g / mL. [10 points]

a. if mass = 2.0 g, then volume = __.

b. if volume = 2.25 mL, then mass = __.

 

5. light [10 points]

a. if frequency = 2.6 * 10 15 Hz, the energy = ___.

b. if wavelength = 217 nm, then energy = __.

 

6. Write the electron configuration and draw the orbital diagram of the following atoms. [20 points]

a. calcium

b. phosphorus

 

7. Sketch all orientations of a p-orbital; provide its name and label the x-, y-, and z- axis. [10 points]