The Mole
6.02 x 1023
What is Avogadro's number?
Molar mass is used to convert between these two units.
What are grams and moles?
What is a mole ratio or coefficients?
The reactant that is completely used up first and limits the amount of product formed.
What is the limiting reactant?
This law states that the volume of a gas is inversely proportional to its pressure.
The mass of 1 mole that can be found on the periodic table.
What is molar mass?
This number is used to convert between moles and a count of items, such as molecules or atoms.
What is Avogadro's number, or 6.02 x 1023?
This is the mole ratio between hydrogen and oxygen in water (H₂O)
What is 2:1?
If 10 g of hydrogen react with 80 g of oxygen to form water, which is the limiting reactant?
2H2 + O2 -> 2H2O
A gas has a volume of 2.0 L at 300 K. What will its volume be at 600 K, if pressure is constant?
What is 4.0 Liters?
Molar mass of 18.998 g/mol.
What is fluorine?
This is the conversion factor used to convert between moles and the volume of a gas.
What is 22.4 L?
Given the balanced equation:
2H₂ + O₂ → 2H₂O
If you start with 4 moles of hydrogen gas, how many moles of water can you produce?
What are 4 mol H2O?
In the reaction 2Na + Cl₂ → 2NaCl, you start with 3.0 mol Na and 1.0 mol Cl₂. Which reactant is in excess?
What is sodium?
2 L of a gas has a temperature of 100 K, the teperature rises to 300 K. What is the new volume?
What is 6 L?
One mole of aluminum has this as its mass.
What is 26.982 g/mol or 27 g/mol?
2.5 mol C has this as its mass.
If 2.5 moles of CH₄ react completely, how many moles of CO₂ are produced?
CH₄ + 2O₂ → CO₂ + 2H₂O
What are 2.5 mol CO2?
You’re making PB&J sandwiches. Each needs 2 slices of bread, 1 spoon of peanut butter, and 1 spoon of jelly.
If you have 10 slices of bread, 6 spoons of peanut butter, and 10 spoons of jelly, which ingredient runs out first?
What is Bread?
At STP, a balloon has a volume of 2.24 L. How many moles of are in the balloon?
What is 0.1 mol?
3 moles of oxygen gas has this as its mass.
What is 96 g/mol?
3.01 x 1024 is equal to this number of moles.
If 10.0 g of iron react, how many grams of iron(III) oxide will form?
4Fe + 3O2 -> 2Fe2O3
What is 14.3 g Fe₂O₃?
You’re making s’mores: 2 graham crackers, 1 marshmallow, and 1 piece of chocolate per s’more.
You have 10 graham crackers, 6 marshmallows, and 8 chocolate pieces.
What limits your number of s’mores?
If temperature and number of moles are constant, what happens to the pressure when the volume of a gas is halved?
It will double.