Team-Based Application Task # 1
CHE 170 – Thursday, 1/19/2012
List First and Last Names of Those Present:
TEAM NAME:
A high school track team bought potassium supplements on line. They have each been taking
one pill at every meal. Unfortunately, an announcement came out that those supplements
contained wildly different amounts of potassium, often way beyond safe amounts. Each of the
kids found a different potassium blood testing kit and emailed in the results. These different
kits report numbers in different units.
It is going to take twenty minutes to look up the addresses of these kids, who are all home
alone without transportation. In the meantime, your team needs to help determine if any of
the kids have overdosed and where to send ambulances first. Blood potassium levels higher
than 0.23 g/L are considered dangerous and require emergency medical attention.
CONVERT EACH OF THE NUMBERS ON THE BACK OF THIS PAGE INTO GRAMS PER LITER.
1) First, work out your answers on scratch paper.
2) Once you agree on the answers, each person should write down the work on the back of
this page. You will keep this, in case you want to use it to study.
3) Ask Mueller for a marker and giant post-it paper. Neatly write the work for each
conversion on the giant paper.
4) Write your team name and the names of those present on the giant paper. You will not
get credit if your name is not on it.
5) Write a star next to any runner that needs an ambulance.
6) Circle the runner that needs help the most.
7) Tell Mueller when your team is done.
Runner
Reported Blood Potassium Level
(Each person should write down work below.)
Bob
0.0059 moles per liter (mol/L)
Latisha
0.0014 pounds per gallon (lbs/gal)
Fareed
180 micrograms per milliliter (µg/mL)
Eugene
1.5x10-6 kilograms per cubic centimeter (kg/cm3)
Maria
290 grams per cubic meter (g/m3)
Hint: first convert m3 on bottom to cm3.
CONVERSION FACTORS
WRITE ON BOARD INSTEAD
(Use this page, front and back, as scratch paper.)
SPECIFIC TO POTASSIUM (from periodic table)
1 mole = 39.1 grams
METRIC PREFIXES
nano
micro
milli
centi
deci
kilo
mega
n = 10-9
µ = 10-6
m = 10-3
c = 10-2
d = 10-1
k = 103
M = 106
MASS
1 lb = 454 g
VOLUME
1 lb = 16 oz
1 mL = 1 cm3
1 gal = 3.79 L
Avogadro’s Number (how many particles --- atoms, ions, or whatever --- in a mole)
1 mole = 6.022x1023