Chemistry Challenge 3: Answers Answers Answers
3.23 x 1019 molecules glucose (C6H12O6)
= …….….__9.69 x 10-3__grams
4.86 x 106 mg sucrose (C12H22O11)
= ………..…....__8.56 x 1024__molecules
10.0 ml sulfur trioxide gas (SO3) at STP = ………….__2.69
x 1023__molecules
1.49 x 105 molecules ethane gas (C2H6)
= ………….__5.54 x 10-18_mL
at STP
0.245 mg calcium carbonate (CaCO3) = ………..….__2.45
x 10-4__grams
6.69 x 1017 mg hydrogen sulfide gas (H2S) =
…….…__.161_______mL
at STP
Don't you feel better now that you have mastered conversions?
...and now a minor intellectual challenge.
Name this poem:
56
How many liters
at STP
would two and a half moles
of Nitrogen gas be?