Calculate the answer to each of the following problems.  Remember to use correct significant figures and units.

#1:   Calculate the density of an object that has a mass of 752 g and has a volume of 389.5 mL.

  1.930 g/mL
  293,000 g/mL
  0.518 g/mL
  1.93 g/mL
  0.5181 g/mL


 #2:    Olive oil has a density of 0.92 g/mL.  What is the mass (in grams) of 227 mL of olive oil?

  0.0041 g
  247 g
  209 g
  210 g
  250 g


#3:    Aluminum has a density of 2.70 g/mL.  What is the volume (in mL) of a 371 g sample of aluminum?

7.28 x 10-3 mL
137 mL
1.00 x 103 mL
1002 mL
140 mL


#4:    An unknown liquid has a volume of 2.150 mL and a mass of 2.7782 g.  Calculate the density of this 
          unknown liquid.

5.973 g/mL
1.292 g/mL
5.97 g/mL
1.29 g/mL
0.7739 g/mL


#5:    Ethyl alcohol has a density of 0.79 g/mL.  Calculate the mass (in grams) of a 52.8 mL sample of
           ethyl alcohol

66.8 g
67 g
66 g
41 g
42 g


#6:   Copper has a density of 8.93 g/mL.  Calculate the volume (in mL) of a 0.300 g sample of copper.

0.0300 mL
2.68 mL
3.00 mL
0.0336 mL
2.70 mL


#7:    Calculate the density of a very small object that has a mass of 0.121g and a volume of 0.099mL.

1.2 g/mL
0.82 g/mL
0.012 g/mL
1.22 g/mL
0.120 g/mL


#8:    Lead has a density of 11.3 g/mL.  Calculate the volume (in mL) of a 0.820 g sample of lead.

9.3 mL
0.073 mL
0.0726 mL
9.27 mL
13.8 mL


#9:    Gold has a density of 19.3 g/mL.  Calculate the mass (in g) of a 0.05 mL sample of gold.

1 g
0.9 g
0.97 g
0.003 g
0.0026 g


#10:   Calculate the density of an object that has a mass of 250 g and 175.65 mL.

1.42 g/mL
0.703 g/mL
44,000 g/mL
0.70 g/mL
1.4 g/mL