Answer the following question using the formula for the Ideal Gas Law: use 0.0821 for “R” a. V= 7 L, n= 2 moles, T= 300K What is P? b. P= 2 ATM, n= 3 moles, n= 4 moles What is T? c. P= 0.5 ATM, V= 200 L, n= 4moles What is T?

A prototype sports ball for a new game is precisely inflated to a pressure of 7.3 psi at 25 degrees C. The ball is spherical with an inner bladder diameter of 22.8 cm. It is filled with air (Mw=28.97 g/mol). Not Avogadro’s number is 6.022 x 10^23 atom/mol. A. Calculate the number of moles of air in the ball at the specified temperature and pressure. Consider the air in the ball to follow the ideal gas law. PV=nRT   Where P is the absolute pressure of the air in atm, V is the volume of the ball, T is the absolute temperature in K, and R is the ideal gas constant.   B. How many oxygen atoms compose the air in the ball? Assume that the mole fraction of N2 in the air is 0.79 and the remainder of the air is 02(oxygen).

a. Given the following set of values for a gas, calculate the unknown quantity: P = 743.3 mm Hg V = ? L n = = 0.1021 mol T = 23.3 °C V = L b. Given the following set of values for a gas, calculate the unknown quantity: P = ? atm V = 28.4 mL n = 0.007052 mol T = 20.5 °C P = c. Given the following set of values for a gas, calculate the unknown quantity: P= 1.079 atm T = atm V = 44.7 mL n = 0.003411 mol T = ? K K

3. A sample of 3.8 moles of a single gas is placed in a 5.500 L tube at 85.0 °C. The density of the gas is 2.76 g/L. What is the pressure of the gas in the tube? a. b. What is the molar mass of the gas in the tube?

1. A sample of gas at 0.5 atmospheres is compressed until it is under 2.5 atmospheres. The temperature is measured as 900 K after it is compressed. What was the temperature of the gas before its pressure changed? Round to the nearest hundredth. O 150 K 50 K O 450 K 180 K

A sample of ideal gas gas a volume of 3.15L at 11.60C and 1.60atm. What is the volume of the gas at 23.60C and 0.994atm?