Stoichiometry Final Review

Vocabulary

100

Molar Mass is...

The mass of one mole substance 

200

The given is...

A value that you already have in the problem, that helps you find the missing value.

300

Mole Ratio is...

The ratio between the 2 mole values based on the original equation and how many subscripts there are. 

400

Limiting reactant is...

Any reactant that is used up first in a chemical equation. 

500

Excess reactants are...

The amount of reactants left over after a reaction stops.

Gram A to Moles B

100

If the solution has 250 grams of NaCl, how many moles Cl2 can be produced?

2NaCl_ 2H2O --> 2 NaOh +Cl2 +H2

2.14 moles

200

How many moles of AgCl are produced from 75 grams of AgNO3?

NaCl+AgNO3 --> AgCl + NaNO3

62.56 g AgCl

300

How many moles of Na2CO3 are required to produce 100 grams of NaNO3?

Na2CO3 + 2HNO3 + CO2 + H2O

0.588 moles

400

If 32g of CaC2 are consumed in this reaction, how many moles of water are needed?

CaC2+ 2H2O ---> C2Hz +Ca(OH)2

0.998 moles

500

Balance then.Determine how many moles of phosphorous will react with 19.6 grams of oxygen

P+O2 --> P4O10

0.489 mol

Mol to Grams

100

How many moles are needed to produce 2.5 grams of ammonia (NH3)

N2+3H2 --> 2NH3

0.22 Moles H2

200

 If a sample of lithium (Li) weighs 100.0 grams, how many moles of lithium are in the sample?

8.326 mol C

300

What Mass (in grams) of carbon is required to form 1 mol CH4?

2C+H2O ---> CH4 +CO2

16 Grams

400

What is the mass of sodium required to produce 25 mol of sodium chloride?

2Na +Cl2 ---> 2NaCl

574.75 g

500

If 4.5 mol of silver nitrate reacts, what Mass (in grams) of sodium bromide is required?

AgNO3 + NaBr ---> NaNO3 +AgBr

463.02 grams

Mol A to Mol B

100

How many moles of hydrogen gas are needed to react with 15.1 moles of chlorine gas

H2+ Cl2 --> 2HCl

0.213 moles 

200

How many moles of Cu are needed to react to 3.50 miles of AgNO3

Cu+ 2 AgNO3 ---> Cu(NO3)+ 2 Ag

1.75 moles 

300

When 1.20 mole of ammonia reacts, the total number of moles of water formed is?

4 NH3 (g) + 5 O2 (g) --> 4 NO (g) + 6 H2O (I)

1.8 moles

400

Suppose 6.00 mol of H2 reacted with sufficient nitrogen. How many moles of ammonia would be produced?

3 H2 + N2 ----> 2NH3

4 moles

500

Determine the moles of aluminum acetate that can be made if you do this reaction with 12.5 moles of acetic acid 

3 CH3COOH+ Al(OH)3 ---> 3 H2O + Al(Ch3COO)3

4 moles 

4.16 exact

Vocabulary pt2

100

Mol

A way of measurement

200

Grams

A way of measurement

300

Balance

A way to make things equal 

400

Element

 a substance made up of only one type of atom, each with the same number of protons

500

Mass

a measure of the amount of matter that an object contains