U7 Day 3 Warm up - Gas Stoichiometry

Front

What is Standard Temperature and Pressure (STP)?

Back

0 Degrees Celsius and 1 atm.

Front

How do you determine the limiting reactant in a chemical reaction?

Back

By comparing the mole ratio of reactants used in the balanced equation to the actual amounts available.

Front

What is the molar mass of a substance?

Back

The mass of one mole of a substance, usually expressed in grams per mole (g/mol).

Front

How many liters does one mole of gas occupy at STP?

Back

22.4 liters.

Front

What is the relationship between moles and grams?

Back

The number of grams in a mole is equal to the molar mass of the substance.

Front

In the reaction N2 + 3H2 → 2NH3, how many moles of hydrogen are needed to react with 1 mole of nitrogen?

Back

3 moles of hydrogen.

Front

What is the formula to calculate the number of moles?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the significance of the coefficients in a balanced chemical equation?

Back

They represent the ratio of moles of each reactant and product involved in the reaction.

Front

How do you convert moles to liters at STP?

Back

Multiply the number of moles by 22.4 L/mol.

Front

What is the ideal gas law equation?

Back

PV = nRT, where P is pressure, V is volume, n is number of moles, R is the ideal gas constant, and T is temperature.