Chemistry Flashcards Template Page 9
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13Chemical Composition
a) How many moles of ethylene glycol are in 25.00mg of
ethylene glycol ?
A molecular formula tells how many moles of an
b) How many moles of carbon are in the above sample ?
atom are in one mole of a molecular compound
c) How many atoms of carbon are in the above sample ?
Molecular Formula
C
H
O
–
2
6
2
1 mole of C
H
O
2
6
2
Chemical Composition
The Mole Concept
Percent Composition
Percent Composition
Chemical formula
Percent Composition
The molecular formula for THC (the active ingredient in
marijuana) is C
H
O
. Calculate the percent mass of C,H,O.
21
30
2
Chemical Composition
Chemical Composition
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