Excellent Dimensional Analysis Problems

Name ______Per ______Date ______

Side 1 – DIMENSIONAL ANALYSIS PROBLEMS

1. How many chopsticks does it take to eat 19 ducks? Assume that 1 duck will feed 5 people and the each person will be using 2 chopsticks.

2. If there are 30 fries in a Happy Meal and it takes 5 happy meals to feed a hungry teenager and there are 2000 hungry teenagers in a school, how many fries does it take to feed a school?

3. First suppose that 1 penguin = 500,000 feathers, 1 pillow = 1,374 feathers, 1 hippie needs 6 pillows to sleep with, 1 tree-house can fit 5 hippies, It takes 233 planks of wood to build a tree-house. The planks of wood are made from recycled bongo drums and each drum can provide 4 planks of wood. If you have 11 penguins, how many bongo drums will you need to recycle?

4. We know that teen movies and Star Trek jokes are excellent sources of laughter, but what we really want to know is… If you saw 67 teen movies, what is the laughter equivalent to Star Trek jokes? Each teen movie has about the same laughter as 15 cheesy jokes, and you can find a lot of cheesy joke in a BK chem class room. There are 2 cheesy jokes on each page of a joke book Mrs. Baileykaze keeps hidden behind her scariest chemicals, and on each page of that joke book, there is one Star Trek jokes.

5. Now, stop making that judgey, judgey face and write your own dimensional analysis problem. Find two people to solve it after you’ve written it and solved it yourself.

Side 2 – FACTOR-LABEL METHOD

1. How many seconds are in an 8 hour work day?

2. A 1.00 degree increase in ˚C is equivalent to a 1.80 degree increase ˚F. If a temperature increases by 48.0˚C, what is the corresponding increase in ˚F?

3. The density of manganese is 7.21 g/cm3. What is the density of manganese expressed in kg/m3?

4. Make the following conversions:

a) 0.44 L/min to mL/sec

b) 7.86 g/cm2 to mg/mm2

c) 1.54 kg/L to g/cm3