Avogadro's Law

Front

What is Avogadro's Law?

Back

Avogadro's Law states that equal volumes of gases, at the same temperature and pressure, contain an equal number of molecules.

Front

What is the molar volume of any gas at STP?

Back

The molar volume of any gas at STP (Standard Temperature and Pressure) is 22.4 L.

Front

How many moles are in 2.00 L of oxygen gas at STP?

Back

0.09 mol.

Front

What does Avogadro's Law imply about gases of the same volume?

Back

Gases of the same volume contain the same number of molecules.

Front

How many molecules are in a 110 L sample of gas at STP?

Back

3 x 10^24 molecules.

Front

If 3.25 mol of Ar occupies 100 L, what volume does 14.15 mol of Ar occupy under the same conditions?

Back

435 L.

Front

What is the relationship between volume and moles according to Avogadro's Law?

Back

The volume of a gas is directly proportional to the number of moles of the gas at constant temperature and pressure.

Front

What is STP in the context of gas laws?

Back

STP stands for Standard Temperature and Pressure, which is 0 degrees Celsius (273.15 K) and 1 atm pressure.

Front

What is the formula to calculate the number of moles from volume at STP?

Back

Number of moles = Volume (L) / 22.4 L.

Front

What is the significance of Avogadro's number (6.02 x 10^23)?

Back

Avogadro's number represents the number of molecules in one mole of a substance.