Chemistry 1151 Conversion Problem Practice
You may have to look up some data and conversion factors. Answers are provided at the end, don’t look until you have attempted the problems.
1. You are doing 65 MPH and you take your eyes off the road for “just a second.” How many feet do you travel in this time?
2. Which distance is further: 50 miles or 100 km?
3. Who is taller: a man 1.62 m tall or a woman who is 5’6” tall?
4. A 1 kg package of hamburger has a mass closest to: 8 oz 1 lb 2 lb 10 lb
5. A recipe in metric calls for 250 ml of milk. How much milk (in cups) should be used?
6. A quarter is 2.5 cm in diameter. How many quarters would have to be lined up in a row to reach a length of 1 meter?
7. 52.2 mm = ___ cm 6.25 mi = ___ km 552 g = ___ kg 557 lbs = ___ kg
46.2 yds = ___ m 292 cm = ___ in 0.501 km = ___ cm 62.5 cm = ___ in
4.95 m = ___ yds 534.1 g = ___ lbs 1.25 in = ___ cm 2.12 qts = ___ L
8. If $1.00 is equivalent to 1.74 German marks, what is the value of a 100 mark bill in $?
9. The United States will soon have a high speed train running between Boston and New York capable of speeds up to 160 mile/hour. Will this be faster or slower than the fastest trains in the United Kingdom which reach speeds of 225 km/hour?
10. 155 °C = ___ F 52 F = ___ °C 200 °C = ___ F 40 °C = ___ F
11. While in graduate school, evening maintenance people often used laboratory ovens to heat pizza and other foods. If they set the dial at 420 F thinking it was Fahrenheit, but it was really Celcius, predict whether their food was under or over cooked when they thought it was done.
12. You decide to buy a pair of French jeans. The waist size is given in cm. Would a waist measurement of 52 cm fit you?
13. A single antibiotic capsule weighs 0.65 g. A pharmacist weighs out 15.6 g of capsules. How many capsules have been dispensed?
14. On the planet Xgnu, the most common units of length are the blim (for long distances) and the krill (for shorter distances). Because the Xgnuese have 14 fingers, it is not surprising that 1400 kryll = 1 blim.
a. Two cities on Xgnu are 36.2 blim apart. What is this distance in krill expressed in correct scientific notation?
b. The average Xgnuese is 170 kryll tall. How many Xgnuese, laid end to end, would fit with 1 blim?
15. How many minutes are in five years?
16. San Francisco to Los Angeles is 405 miles. If your vehicle gets 24 miles/gallon, and gasoline costs $3.50 per gallon, what is the cost to drive to LA from San Francisco?
17. How many cars are there in a long freight train if it take the entire train 2 minutes to pass a station as it travels at 40 miles/hour? Each car is 50 feet long. 5280 ft = 1 mile
18. The price of a ream of paper is $3.30. There are 500 sheets of paper in a ream. If a sheet of paper weighs 0.500 oz, what is the price of a kg of paper? What is the cost of one sheet of paper? What is the mass (grams) of one sheet of paper?
19. Peanut oil has a density of 0.92 g/cm^{3}. If a recipe calls for 1 cup of peanut oil (1 cup = 225 ml), what mass of peanut oil (in grams) are you using?
20. A new United States quarter has a mass of 5.63 g. What is the mass of a row of quarters laid end to end for 1 meter? (See #6 above).
21. At 25 °C the density of water is 0.997 g/cm^{3}, whereas the density of ice at 10 °C is 0.917 g/cm^{3}. If a soft drink can whose volume is 250.0 ml is filled completely with pure water, sealed, and then frozen at 10 °C, what volume does the solid occupy? What would you expect to happen to the can?
Answers – don’t look until you have attempted the problems!
1. 95 feet

2. 100 km

3. Woman (1.68 m)

4. 2 lbs (2.20 lbs)

5. About 1 cup (1.06 cups)

6. 40 quarters

7. 5.22 cm

10.1 km

0.552 kg

253 kg

42.2 m

115 in

50100 cm

24.6 in

5.41 yds

1.18 lbs

3.175 cm

2.00 liters

8. $57.50

9. Faster (257 km/hour)

10. 247F

46.7 °C

392 F

40F

11. Very well done (788F)

12. 20.5 in (I could do one leg)

13. 24 capsules

14. a. 5.07 x 10^{4} kryll
b. 8.24 Xgnuese

15. 2,628,000 minutes

16. $59.06

17. 141 cars

18. $0.47/kg
0.66¢/sheet
14.2 g/sheet

19. 207 g (recall 1 ml = 1 cm^{3})

20. 225.2 g

21. 272 ml It would explode
 