Stoichiometry

Mole to Mole

100

__NaClO₃ --> __NaCl + __O₃

How many moles of O₃ will be produced from 11.2 moles of NaClO₃

16.8 moles O₂

200

__NH₃ + __O₂ --> __NO + __H₂O

How many moles of NH₃ are needed from produce 85.2 moles of water?

56.8 moles NH₃

300

Propane (C₃H₈) reacts with oxygen gas to produce water and carbon dioxide

How many moles of oxygen gas are required to produce 14 moles of water?

17.5 moles O₂

Mole to Mass

100

__NaClO₃ --> __NaCl + __O₃

How many grams of NaCl will be produced from 4.57 moles of NaClO₃ 

~267 grams NaCl

200

__H₂S + __O₂ --> __SO₂ + __H₂O

How many grams of O₂ are required to react with 1.00 moles of H₂S

~48 grams O₂

300

Solid lithium reacts with nitrogen gas to form lithium nitride

If you gave 12.5 moles of lithium nitride, how many grams of nitrogen gas would you need?

~175 grams N₂

Mass to Mole

100

__K + __Cl₂ --> __KCl

How many moles of K will be needed to produce 4.54 grams of KCl?

~0.0609 moles K

200

__Al(NO₃)₃ + __Br₂ --> __AlBr₃ + __NO₃

If you have 76.5 grams of Al(NO₃)₃ how many moles of nitrate is produced?

~1.39 moles NO₃

300

Sodium reacts with water to produce sodium hydroxide and hydrogen gas

How many moles of hydrogen gas will be produced when reacted with 8.4 grams of sodium?

~0.183 moles H₂

Mass to Mass

100

__K + __Cl₂ --> __KCl

What mass of KCl will be produced if 8.1 grams of Cl₂ reacts with K?

~17 grams KCl

200

__NH₃ + __O₂ --> __NO + __H₂O

What mass of nitrogen monoxide is formed from 18.4 grams of oxygen gas?

~13.8 grams NO

300

Iron reacts with oxygen gas to produce iron (III) oxide

What mass of iron (III) oxide can be produced when 20 grams of iron reacts?

~28.6 grams Fe₂O₃

Random

100

__H₂S + __O₂ --> __SO₂ + __H₂O

2.66 grams of H₂S react with 3.00 grams of oxygen gas 

Which is the limiting and which is the excess reactant if you are producing SO₂

H₂S is excess with 5 grams SO₂ being produced

O₂ is limiting with 4 grams SO₂ being produced 

200

__H₂ + __Cl₂ --> __HCl

A mixture contains 15 grams of H₂ and 63 grams of Cl₂

Which is the limiting and which is the excess reactant

H₂ is excess with 543 grams HCl

Cl₂ is limiting with 65 grams HCl

300

__NH₃ + __O₂ --> __NO + __H₂O

48.2 grams of ammonia reacts with 13.4 grams of oxygen gas and produces nitrogen monoxide 

If the actual amount of NO produced is 8.2 grams, what is the percent yield 

48.2 grams ammonia make ~84.9 grams NO

13.4 grams oxygen gas makes ~10.1 grams NO

Theoretical = 10.1 grams 

(8.2 / 10.1) x 100 = ~81.2%