Conversion Factors
Conversion problems
Percent composition
Empirical Formula
Molecular Formula
100
This conversion factor is the definition of 1 mole.
What is 6.022 e 23?
100
This is the number of moles in 98.5 grams of gold.
What is 0.5 moles (or half a mole)?
100
After dividing the 2 masses (elements/total compound), you must multiply by this number always to get the percent composition.
What is 100?
100
This is the empirical formula for N4O10.
What is N2O5?
100
This is the difference between molecular formula and empirical formula.
What is empirical formula shows ratio of atoms while molecular formula shows the number of each atom in 1 molecule? (subscripts are different)
200
This is where to look to find the mass of 1 mole of any element.
What is the periodic table?
200
This is the mass of 6.39 moles of table salt.
What is 373.8 grams?
200
This is the percent composition of hydrogen in water.
What is 11.1% H?
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
This is the first 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?
300
This is the conversion factor when converting between mass and # of moles.
What is molar mass?!
300

This is the mass of 4.148 moles of F2 gas.

What is 157.62 grams?
300
This is the percent composition of hydrogen in ammonium ion.
What is 22.2% H?
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 C3H4N2O2?
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?
400
This is how to find the molar mass of any COMPOUND.
What is the sum of (the number of atoms of an element times its molar mass)?
400

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

What is 8.86 x10 ^23 molecules of ammonia?
400
This is the percent composition of nitrogen in (NH4)2S?
What is 41.2% N?
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?
500
This is the number of molecules in 5.2 grams of dinitrogen pentoxide.
What is 2.90 x10^22 molecules?
500
This is how many atoms are in 100g of potassium hydroxide.
What is 3.22 x10 ^24 atoms?
500
What is the percent composition of oxygen in copper (II) phosphate?
What is 33.5% O?
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?
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