Percent Yield
Limiting & Excess Reactant
Empirical & Molecular Formulas
Molarity & Dilution
TV Shows
100

What is the formula for percent yield?

100

What is the definition of a limiting reactant? An excess reactant?

LR: the reactant that gets consumed first in a chemical reaction and therefore limits how much product can be formed

ER: a reactant in a chemical reaction that is present in a greater quantity than is needed to fully react with the limiting reactant

100

Define Empirical and Molecular formula.

Which is a longer formula? Shorter?

Empirical: a chemical formula showing the simplest ratio of elements in a compound

Molecular: The true number of molecules in the formula

100

What is the molarity formula?

What is the dilution formula?

(WITH UNITS)

M1V1=M2V2

100
What was the show that is based on financial struggles being solved through childhood games-gone deadly?

Squid Games

200

In an experiment, 30g of CH4 was produced, although based on my calculations we should have produced 60g. What is out percent yield?

50%

200

You are given a certain amount of CH4 and O2. The amount of product produced from CH4 is 10g. The amount of product produced from O2 is 5g. 

What is the limiting and excess reactants?

LR: O2

ER: CH4

200

Triethylenemelamine has an empirical formula of C3H4N2 and a molar mass of 204.23 g/mole. What is the correct molecular formula?

C9H12N6

200

How many liters are needed to make a 5M solution with 2 moles of HCl?

0.4L

200

What is the spanish crime thriller follows a criminal mastermind known as "The Professor"?

Money Heist

300

For the equation shown below, if the reaction of 99.8 grams of O2 produces 51.0 grams of CO2, what is the percent yield?

4C2H5Cl + 13O2 → 8CO2 + 10H2O + 2Cl2

60.7%

300

What is the limiting reagent if 78 grams of  Na2O2 were reacted with 29.4 grams of  H2O?

2Na2O2 + 2H2O → 4NaOH + 3O2

LR: Na2O2

300

What is the correct empirical formula for eplerenone, C24H30O6?

C4H5O

300

How many grams of NaBr (molar mass = 102.9 g/mol) would be needed to prepare 700mL of 0.230 M NaBr solution?

16.5669gNaBr

300

What was the show that came out in 2020 where teenagers had to hunt for treasure in North Carolina?

Outer Banks

400

For the UNbalanced equation shown below, if the reaction of 33.3 grams of O2 produces 21.6 grams of CO2, what is the percent yield?

C7H16 + O2 → CO2 + H2O

74.2%

400

24.5 grams of Co is reacted with 2.58 grams of O2. How much excess reactant is left over after the reaction? 

Co + O2 → Co2O3


18.21g excess Cobalt

400

What is the empirical formula for sucralose? 

The percent composition is 36.25% C, 4.82% H, 26.75% Cl and 32.19% O.

C12H19Cl3O8

400

Hydrochloric acid is sold at the store in a 10 M concentration in a 5000mL bottle. How much water will you need to add to make a 3M solution?

16,670mL

400

Who are the 3 actors that played Spiderman in Spiderman No Way Home?

Tom Holland, Andrew Garfield, Tobey Maguire

500

1.3g of Oxygen reacts with excess ammonia to produce 0.68g of water. What is the percent yield of this reaction based on the following UNbalanced formula?

NH3 + O2 --> NO + H2O

77%

500

If the actual yield of Fe was 42.5 g, determine the percent yield of iron

Al + Fe2O3 --> Fe + Al2O3

89.2%

500

A sample of a hydrocarbon was combusted producing 1.054 g of CO2 and 0.2168 g of H2O. What is the empirical formula for the hydrocarbon?

CH

500

You have a 50mL solution of ethanol (C2H6O), which has a density of 0.789g/mL. What is the concentration of a solution using all this ethanol and adding 150mL of water?

5.72M

500

Name 8 Disney Princesses.

Snow White, Cinderella, Aurora, Ariel, Belle, Jasmine, Pocahontas, Mulan, Tiana, Rapunzel, Merida, Moana, Elsa, and Anna.

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