JOIN IN LESSON 3 Flashcards
How are isomers differentiated from each other?
* They have different numbers of neutrons
* They have non-neutral charges
* They have different geometric arrangements of atoms
- They have different geometric arrangements of atoms
For the complete combustion of propane, given by C3H8 + 5O2 -> 3CO2 + 4H2O
how many moles of water are produced when 6.20 moles of propane are
burned in air?
* 1.55
* 6.20
* 24.8
24.8
For the complete combustion of propane, given by C3H8 + 5O2 -> 3CO2 + 4H2O
how many moles of water are produced when 13.1 g of propane are
burned in air?
* 5.35 g
* 21.4 g
* 52.4 g
21.4 g
In the combustion of methane, how many moles of O2 are required if 6.75
mol of CH4 is to be completely consumed?
How many grams of water can be produced if sufficient hydrogen reacts with 26.0 g of oxygen?
How many grams of water can be produced if sufficient hydrogen reacts with 26.0 g of oxygen?
8P4 + 3S8 -> 8P4S3
A solution of hydrochloric acid contains 5.22 g of HCl. When it is allowed to react with 3.25 g of solid K2CO3, the products are KCl, CO2, and H2O. Which reactant is in excess?
If 28.2 g of P4 is allowed to react with 18.3 g of S8, which is the limiting
reactant?
8P4 + 3S8 -> 8P4S3
If you mix 10.0 g of carbon with 20.0 g of sulfur, S8, and the reaction
4C + S8 -> 4CS2
occurs, what is the limiting reactant?
* Carbon
* Sulfur
* Air
Sulfur
EXAMPLE PROBLEM 4.8
In a laboratory experiment, a student heats 42.0 g of NaHCO3 and
determines that 22.3 g of Na2CO3
is formed. What is the percentage yield of this reaction?
How many grams of KClO3 are needed to produce 42.0 g of O2
if the
percentage yield is 65.0%?
2KClO3 → 2KCl + 3O2
* 69.7 g
* 82.5 g
* 165 g
* 371 g
165 g
Example Problem 4.9
If 24.75 mL of 0.503 M NaOH solution is used to titrate a 15.00-mL sample of
sulfuric acid, H2SO4, what is the concentration of the acid?
