Chemistry Coursework: Real World Moles

Real World Moles

Directions: Each of the following problems is something that may occur in real life. Solve the problems and be sure to show your work! DON’T FORGET YOUR UNITS

1. Moles of the Caribbean: If there are 250 g of NaCl in 1 Liter of salt water, how many molecules of NaCl are there?

2. Moles of the Round Table: If an inflatable sword held 3.612 x 10 23

molecules of CO2 from Mr. Collver blowing it up, how many grams of CO2 did he expend?

3. AniMole Kingdom: On a daily basis, Elephants consume nearly 6.3286 x 10 27 molecules of water. How many gallons is that? (Hint: this conversion should take at least 5 steps) (Density of water = 1000g/L). (Click the word elephants to watch live feed from the zoo).

4. Fast and Mole-ious: If Mrs. Wood-Setzer added a NOS system to her car to get to work on time, and she bought a 10 lb container of Nitrous (N2O), how many minutes of Nitrous boost would she have if each mole of Nitrous gives 30 seconds of boost? (Notice your ending unit is minutes, not seconds)

5. Molar Launch: During class, we had a competition to shoot the furthest ping pong ball. Mr. Collver put 0.5 g of methanol (CH3OH) into his canon. When he fires, half of the molecules travel out of the cannon with the ball in a vapor form. So,how many molecules of methanol got shot out behind the ping pong ball?

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