Chem 219: Exam 3 Questions With 100% Correct Answers

Chem 219: Exam 3 Questions With 100% Correct Answers Avogadro's Law equal volumes of gases at the same temperature and pressure contain equal numbers of molecules Boyle's Law Boyle's Law states that at constant temperature and moles, pressure and volume are inversely proportional. Mathematically this is written as: PV = PV Charles' Law the law that states that for a fixed amount of gas at a constant pressure, the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases Gay-Lussac's Law the pressure of a gas is directly proportional to the Kelvin temperature if the volume is constant Combined Gas Law the relationship between the pressure, volume, and temperature of a fixed amount of gas Ideal Gas Law PV=nRT R=.0821 If 5.00 g of Gas A and 5.00 g of Gas B are mixed in the same container, and the partial pressure of Gas B is determined to be twice that of Gas A, what do we know about the gases? If Gas A has half the partial pressure of Gas B, this indicates that there are fewer moles of it at the same mass, and therefore Gas A has twice the molar mass of Gas B mol fraction and partial pressure the formula for both Amonton's Law if the volume of a gas is held constant, increasing the temperature of the gas increases its pressure. Boyle's Law in terms of KE Volume decreased, wall area decreased = increased pressure Avagadro's Law in terms of KE Container pressure constant, more gas molecules added = increased volume Dalton's Law The total pressure of a mixture of gases is the sum of the individual pressures (Ptotal=P1+P2+P3...) The kinetic energy (KE) of a particle of mass (m) and speed (u) is given by KE = 1/2 mu^2 The KE avg of a collection of gas molecules is also directly proportional to the temperature of the gas and may be described by the equation