Kinetic molecular theory Consider two 1-L samples of gas: one is O2 and the other is CO2. Both are at 1 atm and 25 °C. (1) Which sample has the greater mass? (2) Which sample has the greater density? (3) Which sample has the greater average kinetic energy? (4) Which sample has the greater average molecular speed?

How many grams of iron are needed to completely consume 36.4 L of chlorine gas according to the following reaction at 25 °C and 1 atm?iron ( s ) + chlorine ( g )  iron(III) chloride ( s )

Consider the following samples of gas: sample composition pressure temperature A 2.0mol Xe (g) 1.7atm 228.°C B 2.0mol Xe (g) 1.4atm 258.°C C 2.0mol Xe (g) 1.6atm 280.°C sample composition pressure temperature D 1.5mol He (g) 1.5atm 41.°C E 1.5mol Ar (g) 2.4atm 41.°C F 1.5mol Ne (g) 1.2atm 41.°C Draw the set of graphs below that show the distributions of the speed of the atoms in each sample.

7. When detern ing the mass of a liquid, ras in a hurry and did not allow enough time for the temperature of the flask to reach the temperature of the boiling water bath. The student recorded the temperature of the gas as 100.0°C when it was only 80.0°C, Is the molar mass calculated by the student higher or lower than the accepted molar mass, or does this error have no effect on the calculated result? Briefly explain your answer # 2/HB Office DEPOTS b) If the student assumed the volume of the flask was 125 mL (as marked by the side of the flask) rather than measuring the volume experimentally, would the unknown's calculated molar mass be too high, too low, or unaffected? Explain. # 2/HB 4

True or False?  Consider 1 mole of gas A and 1 mole of gas B mixed together inside a rigid 1.0 L container.  Gas A and gas B have the same kinetic energy.

Calculate the average kinetic energy, in J/mol, for a mole of CH₄ at -23.0 °C. Assume ideal gas behavior.

Consider the reaction: 4 Al (s) + 3 O2 (g) → → 2 Al203 (s) How many liters of O2 gas at 40 °C and 0.70 atm are required to produce 150 grams of Al203 (s)? (Hint: when not sure where to start, calculate moles) Gas constant: R = 0.08206 L atm/mol K.

A 335 mL sample of oxygen gas at 25 °C is heated to 50 °C. What is the final volume of the gas (in mL)? (Assume constant P) (Show Work)

1. A 1.0L flask contains equal amounts of O2 and CO2 at 25°C.   a. Which molecules have the greater average speed or are they the same? b. Which molecules have the greater average kinetic energy or are they the same?