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Chemical Reactions
Mass Percent Comp/Empirical & Molecular Formulas
Mass/Mole Calculations
Percent Yield and Limiting Reactants
100

Balance the following chemical equations, and identify the type of reaction:

Sb (s) + Cl2 (g) --> SbCl3 (s)

2 Sb (s) + 3 Cl2 (g) --> 2 SbCl3 (s), combination 

100

Calculate the mass percent composition: 

C17H19NO3

71.55% C, 6.170% H, 4.909% N, 16.82% O

100

5 C + 2 SO2 --> CS2 + 4 CO 

How many moles of CS2 are produced when 2.5 mol of C reacts? 

0.50 mol of CS2

100

Determine the limiting reactant, and calculate the grams of product that would be produced of 20.0 g of each reactant is present initially:

2 Al + 3 O2 --> 2 AlCl3 

Limiting reactant=Cl2 and 25.1 g of AlCl3 is produced 

200

Balance the following chemical equations, and identify the type of reaction:

NI3 (s) --> N2 (g) + I2 (g)

2 NI3 (s) --> N2 (g) + 3 I2 (g), decomposition 

200

Calculate the empirical formula:

7.00 g of C and 1.75 g of H  

CH3 

200

4 NH3 + 3 O2 --> 2 N2 + 6 H2O

How many grams of O2 are needed to react with 13.6 g of NH3?

19.2 g of O2

200

Determine the limiting reactant, and calculate the grams of product that would be produced of 20.0 g of each reactant is present initially:

4 NH3 + 5 O2 --> 4 NO + 6 H2O 

product= H2O 

LR: O2, 13.5 g of H2O is produced

300

Balance the following chemical equations, and identify the type of reaction:

H2SO4 + Fe --> H2 + Fe2(SO4)3

3 H2SO4 + 2 Fe --> 3 H2 + Fe2(SO4)3

single replacement 

300

Calculate the empirical formula:

0.0175 g of H, 2.44 g of N, and 8.38 g O

HNO3

300

4 NH3 + 3 O2 --> 2 N2 + 6 H2O

How many grams of N2 can be produced when 6.50 g of O2 reacts 

3.79 of N2

300

5 C + 2 SO2 --> CS2 + 4 CO

What is the percent yield of carbon disulfide if the reaction of 40.0 g of carbon produces 36.0 g of carbon disulfide?

71.0%

400

Balance the following chemical equations, and identify the type of reaction:

Al2(SO4)3 + NaOH --> Al(OH)3 + Na2SO4

Al2(SO4)3 + 6 NaOH -->2 Al(OH)3 + 3 Na2SO4

double replacement 

400

Mevalonic acid contains 48.64% C, 8.16% H, and 43.20% O. If the experimental molar mass is 148 g, what is its molecular formula? 

C6H12O4

400

4 NH3 + 3 O2 --> 2 N2 + 6 H2O

How many grams of H2O are formed from the reaction of 34.0 g of NH3?

54.0 g of H2O

400

5 C + 2 SO2 --> CS2 + 4 CO 

What is the percent yield of carbon disulfide if the reaction of 32.0 g of sulfur dioxide produces 12.0 g of carbon disulfide? 

63.2%