Chemistry
Name_____________________
3.1-3.2 wks
Period ____________________
De Stigter
18
1.
Round each measurement to 3 sig figs. Write your answer in scientific notation.
a. 87.073
b. 4.3621
c. 0.01552
d. 9009
e. 1.7777 x 10-3
f. 629.55
2.
Perform the following operations. Remember to use correct sig figs.
a. 61.2 + 9.35 + 8.6
b. 9.44 – 2.11
c. 1.36 + 10.17
d. 34.61 – 17.3
3.
Perform the following operations. Remember to use correct sig figs.
a. 8.3 x 2.22
b. 8432 / 12.5
c. 35.2 x 60
d. 2.34 x 10-3 / 9.765 x 10-4
4.
A technician experimentally determined the boiling point of octane to be 124.1 deg C. The
actual boiling point of octane is 125.7 deg C. Calculate the percent error.
5.
Normal human body temperature is 37 deg C. What is this in Kelvin?
6. Liquid nitrogen boils at 77.2 K. What is this in deg C?
7. The element silver melts at 960.8 deg C and boils at 2212 deg C. Express these temperatures in
Kelvins.
8. A small amount of food is burned and is found to have 28.7 calories. Express this in joules.
9.
What is the volume of a book that has the following dimensions: 21 cm, 120 mm, and 3.5 cm?
10. Surgical instruments may be sterilized by heating at 170 deg C for 1.5 hours. What is this in
kelvins.
11. Convert the following:
a. 1.2 m  cm
d. 3.4 x 10-3 mol  kmol
b. 1 L  µL
e. 7.23 x 104 dL  kL
c. 7.34 x 1012 µg  kg
f. 0.687 L  cm3
12. List the following units in order from largest to smallest:
m3, mL, Cl, µL, L, dL