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TRANSCRIPT
MOLE-O!
M
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O
1 2 3 4 5 6 7 8
9 10 11 12 13 14 1516
L
1 2 3 4 5 6 7 8
E
1 2 3 4 5 6 7 8
M–1 Question
If your empirical formula is CH3 and your molar mass is 45.0 g/mole, what is your molecular formula?
Answer
M-2 Question
If your empirical formula is CH2 and your molar mass is 28.0 g/mole, what is your molecular formula?
Answer
M-3 Question
If your empirical formula is CH2O and your molar mass is 360.0 g/mole, what is your molecular formula?
Answer
M-4 Question
If your empirical formula is CH3 and your molar mass is 60.0 g/mole, what is your molecular formula?
Answer
M-5 Question
If your empirical formula is CH2 and your molar mass is 42.0 g/mole, what is your molecular formula?
Answer
M-6 Question
If your empirical formula is CH2O and your molar mass is 180.0 g/mole, what is your molecular formula?
Answer
M-7 Question
If your empirical formula is CH3 and your molar mass is 30.0 g/mole, what is your molecular formula?
Answer
M-8 Question
If your empirical formula is CH2O and your molar mass is 90.0 g/mole, what is your molecular formula?
Answer
O-1 Question
What is the volume (in L) of 52.0 grams of NH3 at STP?
Answer
O-2 Question
How many formula units are contained in 0.285 grams of potassium hydroxide?
Answer
O-3 Question
You have 8.3 X 108 atoms of zinc. How many moles is this?
Answer
O-4 Question
What is the molar mass of calcium nitrate?
Answer
O-5 Question
What is the molar mass of copper (II) nitrate?
Answer
O-6 Question
You have 264 grams of sodium hydroxide. How many moles is this?
Answer
O-7 Question
You have 1.2 grams of sodium. How many atoms is this?
Answer
O-8 Question
What is the volume (in L) of 4,260 atoms of Neon at STP?
Answer
O-9 Question
What is the volume (in L) of 0.847 grams of carbon dioxide at STP?
Answer
O-10 Question
What is the mass (in grams) of 0.035 moles of chromium (II) chloride?
Answer
O-11 Question
What is the mass (in grams) of 1.74 X 1016 formula units of sodium hydroxide?
Answer
O-12 Question
How many molecules are contained in 26 grams of water?
Answer
O-13 Question
What is the mass of 3 atoms of helium?
Answer
O-14 Question
What is the volume (in L) of 56.27 grams of nitrogen dioxide at STP?
Answer
O-15 Question
What is the mass of 3,720 molecules of O2 gas?
Answer
O-16 Question
What is the mass (in grams) of 263 L of dinitrogen pentoxide at STP?
Answer
L-1 Question
A 1.023 gram sample of hydrated copper (II) sulfate, CuSO4• X H2O, is heated to remove all the water and produce 0.653 grams of the anhydrous salt. What is the value of “X?” Answer
L-2 Question
What is the percent water in copper (II) nitrate trihydrate?
Answer
L-3 Question
What is the percent water in nickel (II) chloride hexahydrate?
Answer
L-4 Question
Hydrated calcium sulfate, CaSO4• X H2O, contains 20.93% water. What is the value of “X?”
Answer
L-5 Question
Borax powder has the formula Na2B4O7• X H2O. When 2.145 grams of the hydrate are heated and the water is removed, 1.130 grams of anhydrous salt remain. What is the value of “X?”Answer
L-6 Question
What is the percent water in magnesium nitrate hexahydrate?
Answer
L-7 Question
What is the percent water in barium chloride dihydrate?
Answer
L-8 Question
If 1.687 grams of epsom salt, MgSO4• X H2O, is heat to remove all water, 0.824 grams of salt remain. What is the value of “X?”
Answer
E-1 Question
What is the percent lead in lead (II) chloride?
Answer
E-2 Question
What is the percent potassium in potassium dichromate?
Answer
E-3 Question
What is the empirical formula of a compound composed of 77.7% iron and 22.3% oxygen?
Answer
E-4 Question
What is the empirical formula of a compound composed of 44.0% iron and 56.0% chlorine?
Answer
E-5 Question
What is the empirical formula of a compound composed of 34.4% iron and 65.6% chlorine?
Answer
E-6 Question
What is the percent sulfur in iron (II) sulfide?
Answer
E-7 Question
What is the percent sodium in sodium sulfate?
Answer
E-8 Question
What is the empirical formula of a compound composed of 69.9% iron and 30.1% oxygen?
Answer
M-1 Answer
C3H9
M-2 Answer
C2H4
M-3 Answer
C12H24O12
M-4 Answer
C4H12
M-5 Answer
C3H6
M-6 Answer
C6H12O6
M-7 Answer
C2H6
M-8 Answer
C3H6O3
O-1 Answer
68.5 L NH3
O-2 Answer
3.06 x 1021 formula units KOH
O-3 Answer
1.14 x 10-15 moles Zn
O-4 Answer
164.1 g/mole Ca(NO3)2
O-5 Answer
187.5 g/mole Cu(NO3)2
O-6 Answer
6.6 moles NaOH
O-7 Answer
3.1 x 1022 atoms Na
O-8 Answer
1.59 x 10-19 L Ne
O-9 Answer
0.431 L CO2
O-10 Answer
4.3 grams CrCl2
O-11 Answer
1.16 x 10-6 grams NaOH
O-12 Answer
8.7 x 1023 molecules H2O
O-13 Answer
1.99 x 10-23 grams He
O-14 Answer
27.4 L NO2
O-15 Answer
1.98 x 10-19 grams O2
O-16 Answer
1,268 grams N2O5
L-1 Answer
22.4% H2O
L-2 Answer
22.4% H2O
L-3 Answer
45.4% H2O
L-4 Answer
CaSO4•2H2O
L-5 Answer
Na2B4O7•10H2O
L-6 Answer
42.1% H2O
L-7 Answer
14.7% H2O
L-8 Answer
MgSO4•7H2O
E-1 Answer
74.48% Pb
E-2 Answer
26.58% K
E-3 Answer
FeO
E-4 Answer
FeCl2
E-5 Answer
FeCl3
E-6 Answer
36.52% S
E-7 Answer
32.37% Na
E-8 Answer
Fe2O3