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Balancing Equations
Mole to Mole
Mass to Mass
BCA Charts
100

Na + MgF2  NaF + Mg

2,1,2,1

100

2KClO3 --> 2KCl + 3O2

How many moles of oxygen are produced when 5 moles of KClO3 react? 

7.5 moles of oxygen

100

Li3N + 3H2O --> NH3 + 3LiOH

 

How many grams of LiOH are produced when 0.5g of Li3N react?

1.03g LiOH

100

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

When 5 moles of NH3 reacts with 7 moles of O2

how many moles of each product are made?

what is the limiting reactant?

How many moles of the excess reactant are leftover?

2.5 moles N2

7.5 moles H2O

NH3 is the LR

3.25 moles O2 left over

200

Cl2 + KI --> KCl + I2

1,2,2,1

200

Zn + 2HCl --> ZnCl2 +H2

How many moles of hydrogen are produced from the reaction of 2.56 moles of zinc?

2.56 moles of hydrogen

200

2NaI + Cl2 --> NaCl + I2


How many grams of sodium chloride are produced when 1.7g of NaI react?

0.33 g NaCl

200

SiO2 + 4HF --> SiF4 + 2H2O

4.5 moles of SiO2 react with 6 moles of HF

How many moles of each product are made?

What is the limiting reactant?

How many moles of the excess reactant are leftover?

1.5 mole SiF4

3 mole H2O

HF is the LR

3 moles SiO2 leftover

300

P + O2--> P4O10

 4,5,1

300

C3H8 + 5O2 --> 3CO2 + 4H2O

How many moles of oxygen are necessary to react completely with 5.83 moles of C3H8?

29.15 moles of oxygen

300

2CO + O2 --> 2CO2


What mass of CO must react in order to produced 5.34g of CO2?

3.40g CO

300

Mg + 2HCl --> MgCl2 + H2


0.205 moles Mg react with 0.16 moles HCl

how many moles of each product are made?

what is the limiting reactant?

How many moles of the excess reactant are leftover?


0.08 moles MgCl2 

0.08 moles H2

HCl is the LR

0.125 moles Mg leftover

400

Al2O3 --> Al  + O2

2,4,3
400

2Al(OH)3 + 3H2SO4 --> Al2(SO4)3 + 6H2O

How many moles of water are produced when 0.78 moles of Al(OH)3 react?

2.34 moles of water

400
Ni(NO3)2 + 2NaOH --> Ni(OH)2 + NaNO3​


How many grams of NaOH will react with 2.95 grams of Ni(NO3)2?

​​​

1.29g NaOH

400

N2H4 + 2H2O2 --> N2 + 4H2O

0.75 moles of N2H4 reacts with 1 mole of H2O2

how many moles of each product are made?

what is the limiting reactant?

How many moles of the excess reactant are leftover?

0.5 moles N2

2 moles of H2O

H2O2 is the LR

0.25 moles N2H4 leftover

500

C2H6 + O2 --> CO2 +H2O

2,7,4,6

500

2HCl + Ca → H2 + CaCl2

How many moles of H2 are produced when 0.45 moles of HCl react?

0.225 moles H2

500

KClO3 --> 2KCl + 3O2


How many grams of oxygen gas are produced when 57g of KClO3 react?

44.65 g O2

500

2CuCl2 + 4KI --> 2CuI + 4KCl + I2

0.56 moles CuCl2 reacts with 0.64 moles KI

how many moles of each product are made?

what is the limiting reactant?

How many moles of the excess reactant are leftover?

0.32 moles CuI

0.64 moles KCl

0.16 moles I2

KI is the LR

0.24 moles CuCl2 leftover