Mole Conversions
To go from moles to mass, you would do this...
multiply by molar mass
If you have 30 L of O2 gas, how many moles of oxygen are there?
1.34 mol
Calculate the molar mass of H2O
18 g/mol
___ Cl2 --> ___ Cl
1,2
Given the equation
2 H2 + 1 O2 --> 2 H2O
If you begin with 1 mole of oxygen, how many moles of water can you produce?
2 moles H2O
To convert volume into moles, you would do this...
Divide by 22.4 L/mol (molar volume)
If you have 711 grams of water, how many moles of H2O do you have
39.5 moles
Calculate the molar mass of CO2
44 g/mol
____ H2 + ____ Cl2 --> ___ HCl
1,1,2
Given the equation
2 H2 + 1 O2 --> 2 H2O
If you begin with 1.687 moles of hydrogen, how many moles of water can you produce?
1.687 mol water
To convert from particles to moles, you would do this...
divide by Avogadro's Number (6.022x10^23)
If you have 3.2 moles of CO2, how many particles are there?
1.92 x 1024 particles of CO2
Calculate the molar mass of NH3
17 g/mol
___ Na + ___ Cl2 --> ____ NaCl
2,1,2
Given the equation
2 H2 + 1 O2 --> 2 H2O
If you begin with 5.6 mole of oxygen, how many moles of hydrogen do you need?
11.2 mol hydrogen
To convert from moles to mass, you would do this...
multiply by molar mass
If you have 44.8 L of Neon Gas (Ne), how many grams do you have?
40.360 g Ne
Calculate the molar mass of CCl4
153.82 g/mol
___ CH4 + ___ O2 --> ___CO2 + ___ H2O
1,2,1,2
Given the equation
2 H2 + 1 O2 --> 2 H2O
If you begin with 64 g of oxygen, how many moles of hydrogen do you need?
4 moles hydrogen
Given a sample of 32 grams of oxygen gas (O2), how many particles of oxygen gas are present?
6.022 x 10^23 particles O2
Calculate the molar mass of C6H12O6
180 g/mol
___ Fe + ___ O2 --> ___ Fe2O3
4,3,2
Given the equation
2 H2 + 1 O2 --> 2 H2O
If you begin with 32 g of oxygen, how many grams of water can you produce?
36 g water