Naming and Formula Writing
Theoretical and Percent Yield
Stoichiometry
Empirical and Molecular Formulas
HONORS:Limiting and Excess Reagents
CHEM 1: Moles
100
Calcium Oxide
What is CaO
100
FeBr2 + 2 KCl --> FeCl2 + 2KBr What is the theoretical yield of FeCl2 if i started with 34 grams of FeBr2
What is 19.98 g FeCl2
100
Mg + 2NaF --> MgF2 + 2Na If the reaction started with 5.5 moles of sodium fluoride, how many moles of magnesium fluoride will be produced?
What is 2.75 moles of magnesium fluoride
100
a compound with an empirical formula of C2H4NO and a molar mass of 116.1 g/mol, what is the molecular formula for this compound?
What is C4H8N2O2
100
HONORS: NH3 + O2 --> NO + H2O In an experiment, 3.25 g of NH3 are allowed to react with 3.5 g of O2. Which reactant is the limiting reagent? CHEM 1: How many moles are on 36 L of H2O?
HONORS: What is Oxygen. CHEM 1: What is 1.61 moles.
200
Lead (II) Nitrate
What is Pb(NO3)2
200
TiS + H2O --> H2S + TiO Starting with 25 g of TiS, what is the theoretical yield of Hydrosulfuric acid (H2S)?
What is 11.05 g H2S
200
LiOH + HBr --> LiBr + H2O Starting with 10 grams of lithium hydroxide, how many molecules of lithium bromide will be produced?
What is 2.51 X 10 23 molecules of lithium bromide
200
what is the empirical formula for a compound that has a molecular formula of C2H6O2?
What is CH3O
200
HONORS: If i start wit 25 g of Lead (II) Nitrate and 15 g of sodium iodide. Which of the following is in excess? CHEM 1: How many molecules are in 3.45 moles of H2O
HONORS: What is Sodium iodide CHEM 1: What is 2.08 E 24 molecules
300
Magnesium Nitride
What is Mg3N2
300
LiOH + KCl --> LiCl + KOH this reaction started with 20 g of LiOH and only produced 6 g of LiCl. What is the percent yield?
What is 17% yield.
300
C2H4 + 3O2 --> 2CO2 + 2H2O How many liters of carbon dioxide will be produced if you start with 1.5 moles of ethylene?
What is 67.2 liters of carbon dioxide
300
A compound containing 40.0% Carbon, 6.7% hydrogen, and 53.3% oxygen with a molecular mass of 175 g/mol. What is the molecular formula of the unknown compound?
What is C6H12C6
300
HONORS: if 4.95 g of ethylene(C2H4) are combused with 3.25 g of oxygen. Which of the reactants is the limiting reagent? CHEM 1: How many grams are in 2.78 moles of Calcium Nitrate?
HONORS: What is Oxygen CHEM 1:What is 455.92 grams of calcium nitrate.
400
LiCl
What is Lithium Chloride
400
H2SO4 --> H2O + SO3 If i start with 89 grams ofSulfuric acid and only produce 7.1 grams of water, what is the percent yield?
What is 39 % yield
400
HCl + Na2SO4 --> NaCl + H2SO4 How many grams of sulfuric acid will be produced if you start with 20 grams of hydrochloric acid?
What is 196.12 grams of sulfuric acid
400
An unknown compound is fount to contain 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen with a molecular mass of 60.0 g/mol. What is the molecular formula of the unknown compound?
What is C2H4O2
400
HONORS: identify the limiting reagent and the excess reagent if 42.1 g of C6H6 are reacted with 73 g of Bromine. CHEM 1: How many molecules are in 45 L of CO2.
HONORS:What is Bromine =L.R? What is C6H6= E.R. CHEM 1: What is 1.21 E 24 molecules of CO2
500
Al2(SO4)3
What is aluminum sulfate
500
C5H8 + O2 --> CO2 + H2O I start with 5 grams of C5H8, i isolated 6.1 grams of water, what is my theoretical yield
What is 74.5 % yield
500
C5H12 + O2 --> CO2 + H2O What volume of H2O is produced when 56.8 grams of C5H12 is burned? Assume excess oxygen.
What is 106.02 L of H2O
500
A hydrocarbon is a compound comprised of carbon and hydrogen atoms. An unknown hydrocarbon is found to contain 85.7% carbon and has a molecular mass of 84 g/mol. What is the molecular formula for this compound?
What is C6H12
500
HONORS: Silicon Nitride is made by combining Si and Nitrogen gas at high temperatures. if i start with 65 g of Silicon and 75 g of nitrogen gas, which is my excess reagent? CHEM 1: How many grams are in 4.89 Liters of potasium phosphate?
HONORS: What is Silicon CHEM 1: What is 46.28 grams of potassium phosphate
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