Exam 5: The Properties of Gases

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Ammonium nitrate can decompose according to the following equation: NH4NO3(s) \rightarrow N2O(g)+ 2H2O(g) How many liters of gas are produced by decomposition of 160 g of ammonium nitrate at -25 \circ C and 86.0 kPa?

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Consider the following reaction: 4NaO2(s)+ 2CO2(g) \rightarrow 2Na2CO3(s)+ 3O2(g) How many moles of NaO2 are needed to react with 75.0 L of carbon dioxide at STP?

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The main composition of dry air at sea level is about 75.5% nitrogen,23.1% oxygen,and 1.3% argon.In a 1.00-g sample of dry air at 1.00 atm,calculate the partial pressure of argon gas.

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If the compression factor,Z,is less than one for a given gas,the van der Waals coefficient "a" is dominant for real gases.True or false?

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What is the pressure inside a system when the system-side column in an open mercury manometer is 75.0 mm lower than the atmosphere side when the atmospheric pressure is 735 mmHg?

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How many atoms of helium occupy 100.0 mL if the temperature is 100.°C and the pressure is 1.00 × 10-2 Torr?

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Oxygen can be produced in the laboratory by the following reaction: 2KClO3(s) \rightarrow 2KCl(s)+ 3O2(g) How many moles of potassium chlorate are needed to produce 2.75 L of oxygen,collected over water at 37 \circ C and 94.9 kPa? The vapor pressure of water at 37 \circ C is 6.28 kPa.

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The value of the gas law constant,R,in units of L.kPa.mol-1.K-1 is

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Consider two flasks at 25 \circ C,one contains an ideal gas and the other contains the real gas SO3.Which statement regarding these gases is true?

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Consider the following van der Waals coefficients: Consider the following van der Waals coefficients:   Which of the following gases has the smallest attractive forces? Which of the following gases has the smallest attractive forces?

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Calculate the number of moles of oxygen gas collected by displacement of water at 14.0 \circ C if the atmospheric pressure is 790.Torr and the volume is 5.00 L.The vapor pressure of water at 14.0 \circ C is 12.0 Torr.

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Consider both nitrogen and chlorine as ideal gases. (a)What is the molar kinetic energy of nitrogen gas at 25 \circ C? (b)At 25 \circ C,the molar kinetic energy of chlorine gas is ___________________________(equal to,greater than,less than)the molar kinetic energy of nitrogen.

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What mass of zinc metal is required to produce 12.0 L of hydrogen gas at exactly 0°C and 2.00 atm by reaction of the metal with excess strong acid?

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Which molecules of the following gases will have the greatest root mean square speed?

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