REVIEW- Unit 3 Learning Checkpoint 1

Front

What is the ideal gas law equation?

Back

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

Front

Define molar mass.

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is the relationship between moles and mass?

Back

Mass (g) = Moles (mol) × Molar Mass (g/mol).

Front

What is the significance of STP in gas calculations?

Back

STP (Standard Temperature and Pressure) is defined as 0°C (273.15 K) and 1 atm pressure, used as a reference point for gas calculations.

Front

How do you convert Celsius to Kelvin?

Back

K = °C + 273.15.

Front

What is the definition of pressure in the context of gases?

Back

Pressure is the force exerted by gas particles colliding with the walls of their container, typically measured in atmospheres (atm) or pascals (Pa).

Front

What is the concept of gas density?

Back

Gas density is the mass of gas per unit volume, often expressed in grams per liter (g/L).

Front

How do you calculate the density of a gas?

Back

Density = Mass / Volume.

Front

What is Avogadro's number?

Back

Avogadro's number is 6.022 x 10²³, representing the number of particles (atoms, molecules) in one mole of a substance.

Front

What is the relationship between volume and temperature in gases?

Back

According to Charles's Law, at constant pressure, the volume of a gas is directly proportional to its temperature in Kelvin (V1/T1 = V2/T2).