Types of reactions
Conversion problems
Empirical Formula
Molecular Formula
Molecular V Empirical
100

H2 + O2 -> H2O

What is synthesis? 

100

This is the number of moles in 98.5 grams of gold.

What is 0.500 moles?

100

This is the empirical formula for N4O10.

What is N2O5?

100

The difference between molecular formulas and empirical formulas.

An empirical formula is the reduced formula while molecular formula is the actual formula of a molecule (or a multiple of the EF) 

100

True or False:  It is impossible for the molecular formula to be the same as the empirical formula for a compound.

What is false?

200

CO2 -> C + O2

What is decomposition? 

200

This is the mass of 6.39 moles of table salt.

What is 373 grams?

200

This is the empirical formula for a compound that has 48.0% C, 4.0% H and 48.0% O.

What is C4H4O3?

200

The next step in calculating the molecular formula if empirical formula and molar mass of molecular formula is given.

What is find the molar mass of the empirical formula?

200

Type of formula indicates the actual number of atoms of each element present in a compound

What is the molecular formula? 

300
PbNO3 + H2O -> Pb2O + HNO3

What is double replacement? 

300

This is the weight of 3.01 x 1023 atoms of bismuth (Bi).

What is 104 grams?

300

This is the empirical formula for a compound that has 36.0% C, 4.0% H, 28.0% N and 32.0% O.

What is C3H6N2O2?

300

This is the molecular formula of a compound if its empirical formula is C2OH4 and it has a molar mass of 88 g/mol.

What is C4O2H8?

300

A(n) ________________ formula is the simplest, reduced ratio of elements in a compound.  

What is an empirical formula?

400

C6H12O6 -> C + H2 + O2

What is decomposition? 

400

This is how many molecules are in 25 g of ammonia (NH3).

What is 8.8 x 1023 molecules of ammonia?

400

This is the empirical formula for a compound that has 24.0 % C, 7.0 % H, 38.0 % F and 31.0 % P.

What is C2H7F2P?

400

This is the molecular formula for a compound that has an empirical formula of C4H8N2O and a mass of 200 g/mol.

What is C8H16N4O2?

400

Compare the following formulas:   C2H4O2 and CH2O.  Which of the following is a TRUE statement describing these formulas? 

a.  C2H4O2 is the empirical formula.  

b. C2H4O2 is the structural formula.

c. CH2O is the empirical formula.

d.  CH2O is the molecular formula.

c. CH2O is the empirical formula.

500

CH+ O--> CO2 + H2

What is combustion?

500

The number of molecules in 100 g of KOH.

What is 1 x 1024 molecules?

500

This is the empirical formula of a compound that has 48.0 % C, 8.0 % H, 28.0 % N and 16.0 % O.

What is C4H8N2O?

500

This is the molecular formula of a compound that has an empirical formula of C5H12N2 and a molar mass of 300 g/mol.

What is C15H36N6?

500

This is the empirical formula for dinitrogen tetroxide.

What is NO2?