Gas Laws. Chemistry 9(A). Learning Objectives Describe the relationships between volume, pressure, number of moles, and temperature for an ideal gas Perform calculations that predict values for variables using Boyle’s law Charles’ law Avogadro’s law Ideal gas law
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Ex) Volume of a gas when T1 < T2
Ex) 25 ∘C + 273 = 298 K
Ex) A 2.4 L volume of gas is heated from 298 K to 405 K. What new volume does it occupy?
Ex) How many kilopascals are equal to 5.00 atm?
2. Identify the formula and rearrange, if needed
Ex) The initial pressure of a 3.0 L sample of gas was 2.5 atm. At what pressure will the volume of the gas expand to 5.0 L?
Ex) How many moles of carbon monoxide gas are present in a 9.6 L sample if 4.2 moles were contained in 5.0 L sample?
Ex) What is the volume of a 1.42 mol sample of O2 gas at 25 °C and 1.25 atm of pressure?
Ex) A mixture of gases containing methane, CH4, ethane, C2H6, and propane, C3H8, gases has a total pressure of 975 mmHg. If the partial pressures of CH4 and C2H6 are 235 mmHg and 450mmHg, respectively, what is the partial pressure of C3H8 ?