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Name:
Period:
Group 1 - 0.00450 mol
Massing the Moles of Chocolate
During the holiday time, chocolate is a favorite treat of children (young and old). Chocolate is not a single molecule but accurately a mixture where the main ingredient is cocoa. They believe cocoa is made up of thembroma oil, which they believe the chemical formula of this oil is C64H128O2. So I want you to mass out some chocolate.
How much you mass out depends on the number of moles of "chocolate" you are investigating.
All groups will be assuming chocolate = all thembroma oil. So you will use the oil's chemical formula to determine the molar mass of the chocolate and thereby the mass you need to "weigh out" to obtain your group's desired moles.
Group 1 - 0.00450 moles Group 6 - 0.00575 moles Group 11 - 0.00700 moles
Group 2 - 0.00475 moles Group 7 - 0.00600 moles Group 12 - 0.00725 moles
Group 3 - 0.00500 moles Group 8 - 0.00625 moles Group 13 - 0.00750 moles
Group 4 - 0.00525 moles Group 9 - 0.00650 moles Group 14 - 0.00775 moles
Group 5 - 0.00550 moles Group 10 - 0.00675 moles Group 15 - 0.00800 moles
Please follow the direction below.
Directions
1) Using the space on back of this page, determine the mass you need to have 1.62E22 molecules of chocolate (C64H128O2). Please show all work.
2) After checking your answer with the teacher, obtain a Zip Lock plastic bag.
3)With a permanent marker, write the following information on the bag (before massing).
a) Name of people in the group.
b) Period #
c)Mass of plastic bag: ###g (of course you leave this blank until after you mass bag)
d)Mass of plastic bag and chocolate:###g
(of course you leave this blank until after you mass bag)
4) Mass out plastic bag and put inform on plastic bag.
5) Mass out the correct amount of chocolate and write the total mass (bag & chocolate) on bag.
6) Write all the masses you did from above on the space below.
Mass of pastic bag:
Mass of chocolate:
Mass of chocolate and plastic bag: