Element Density Chart (Page 2 of 2) in pdf

5a. (You will need the data table for the next few problems)

What is the mass of a piece of zinc, if the volume is 5.0 cm

b. If a piece of zinc has a mass of 15 grams, what is the volume?

6a. Determine the mass of 31.0 mL of mercury.

b. A mercury thermometer contains 1.1 grams of mercury. What volume of liquid is in the thermometer?

(Note: Our lab thermometers contain alcohol and dye, instead of mercury. Mercury is toxic!)

7. A ten ounce gold bar is for sale for $13,400. Given that ten ounces is equivalent to 283 grams, calculate

the volume of the gold bar.

Quartz is a mineral that consists mainly of crystalline silicon dioxide (SiO

). Though pure silicon dioxide is colorless, impurities

can cause the quartz to be colored. For example, “amythyst” is a type of quartz that is violet due to the presence of a small amount of

iron, and “rose quartz” is pink due to the presence of iron and titanium. Suppose that water displacement is used in order to

determine the density of a piece of quartz, and the following data is obtained.

Volume of water in a 100 mL graduated cylinder:__61.0 mL____

Water level after a piece of quartz is dropped in:___69.7 mL___

Volume of the piece of quartz (you fill in):__________________

Mass of the piece of quartz: ________________22.36 g__ ___

a. Use the data to calculate the density of quartz.

b. Based on the density give for silicon dioxide in the data table, does your answer to (a) seem reasonable?________

9. Density Demo:

HCl

-------> _________________________________________

(s)

(aq)

b. Flame test reaction: __________________________________________________________

10. Significant Figure Practice: Do the following calculations, and report the answer to the correct number of

significant figures.

Calculator Answer

Correct Sig. Fig. Answer

a. 1132.3 + 124.2 + 1.27

____________________

b. 3.23 x 152.3

____________________

c. 85.6 / 4.28

____________________

d. 13.108 - 2.66

____________________

e. 0.0050000 x 4.0

____________________

f. 3080 + 256.27

____________________

Element Density Chart Page 2