Grams to Particles Conversions

Gram-Particle, Particle-Gram, Gram-Liters, Liters-Grams Conversion Guided Practice Sheet – Not Homework – Keep this Resource sheet Important Constants: 1 mole = 6.022x1023 particles 1 mole = 22.4 L for gases at STP

Grams to Particles Conversions

Step 1: Put your molar mass in the bottom of the equation, to divide by it and cancel out grams. 1 mole goes on top.

Example: How particles are there in 28 grams of Carbon? Molar Mass = 12.01 g/mol

_____ g of Carbon / _____ moles
_____ g of Carbon

Step 2: Put 1 mole in the bottom of the equation to cancel out moles. Put 6.022x1023 particles on top.

Example: How particles are there in 28 grams of Carbon? Molar Mass = 12.01 g/mol

_____ g of Carbon / _____ moles / _____ particles
_____ g of Carbon / _____ moles

Step 3: Multiply the top together, multiply the bottom together, take the top divided by the bottom.

Example: How particles are there in 28 grams of Carbon? Molar Mass = 12.01 g/mol

_____ g of Carbon / _____ moles / _____ particles / =_____ particles of Carbon
_____ g of Carbon / _____ moles

Example: How many particles in 95 g of Aluminum? Molar Mass = 26.98 g/mol

Particles to Grams Conversions

Step 1: Put your 6.022x1023 particles in the bottom of the equation, to divide by it and cancel out particles. 1 mole goes on top.

Example: What is the mass of 2.8x1025 particles of Nitrogen? Molar Mass = 14.01 g/mol

_____ particles of Nitrogen / _____ moles
_____ particles of Nitrogen

Step 2: Put 1 mole in the bottom of the equation to cancel out moles. Put molar mass on top.

Example: What is the mass of 2.8x1025 particles of Nitrogen? Molar Mass = 14.01 g/mol

_____ particles of Nitrogen / _____ moles / _____ g of Nitrogen
_____ particles of Nitrogen / _____ moles

Step 3: Multiply the top together, multiply the bottom together, take the top divided by the bottom.

Example: What is the mass of 2.8x1025 particles of Nitrogen? Molar Mass = 14.01 g/mol

_____ particles of Nitrogen / _____ moles / _____ g of Nitrogen / =_____ g of Nitrogen
_____ particles of Nitrogen / _____ moles

Example: What is the mass of 7.5x1024 particles of Zinc? Molar Mass = 65.39 g/mol

Grams to Liters Conversions

Step 1: Put your molar mass in the bottom of the equation, to divide by it and cancel out grams. 1 mole goes on top.

Example: How liters are there in 82 grams of Oxygen gas? Molar Mass = 32.00 g/mol

_____ g of Oxygen gas / _____ moles
_____ g of Oxygen gas

Step 2: Put 1 mole in the bottom of the equation to cancel out moles. Put 22.4 L on top.

Example: How liters are there in 82 grams of Oxygen gas? Molar Mass = 32.00 g/mol

_____ g of Oxygen gas / _____ moles / _____ liters of Oxygen gas
_____ g of Oxygen gas / _____ moles

Step 3: Multiply the top together, multiply the bottom together, take the top divided by the bottom.

Example: How liters are there in 82 grams of Oxygen gas? Molar Mass = 32.00 g/mol

_____ g of Oxygen gas / _____ moles / _____ liters of Oxygen gas / =_____ liters of Oxygen gas
_____ g of Oxygen gas / _____ moles

Example: How many liters are there in 17 g of Ar gas? Molar Mass = 39.95 g/mol

Liters to Grams Conversions

Step 1: Put your 22.4 L in the bottom of the equation, to divide by it and cancel out liters. 1 mole goes on top.

Example: What is the mass of 85 L of Radon gas? Molar Mass = 222 g/mol

_____ liters of Radon / _____ moles
_____ L of Radon

Step 2: Put 1 mole in the bottom of the equation to cancel out moles. Put molar mass on top.

Example: What is the mass of 85 L of Radon gas? Molar Mass = 222 g/mol

_____ liters of Radon / _____ moles / _____ g of Radon
_____ L of Radon / _____ moles

Step 3: Multiply the top together, multiply the bottom together, take the top divided by the bottom.

Example: What is the mass of 85 L of Radon gas? Molar Mass = 222 g/mol

_____ liters of Radon / _____ moles / _____ g of Radon / =_____ g of Radon
_____ L of Radon / _____ moles

Example: What is the mass of 75 L of Chlorine gas? Molar Mass = 70.90 g/mol