Complete the following exercises to help you solidify your understand the utility of moles:
The conversion factor given in the back of your book isl amu = 1.66 × 10-2/ kg.
10o0g
This can be written as 1.66× 10-27 Kg
("kilograms per amu"). ×
Tkg
amu
1. Change this conversion factor to grams per amu.
1,60xl0/amu
2. To get the number of amu per gram (the inverse), take the inverse of the number answer to #1
(divide 1 by that number). WRITE THE UNITS. -- do you recognize this number??!
3
amu
kg
0gadols number
3. Since you have a conversion factor in amu(#1), you can convert from a mass in amu to one in
grams.
Do the following in order to demonstrate to yourself again what a mole is:
a. How much does 1 molecule of SO, weigh in amu?
b. How much does 1 molecule of SO, weigh in grams?
32,07+ 162)- 69.07g
c. How muchdo 6.022 × 1023 (one mole of) SO, molecules weigh in grams?
emoie
n ftoe