Exam 10: Gases: Their Properties and Behavior

Given three cylinders containing O₂ gas at the same volume and pressure.Cylinder A is at -35°F,cylinder B is at -15°C,cylinder C is at 250 K.Which cylinder contains the largest mass of oxygen?

A 1.000 kg sample of nitroglycerine,C₃H₅N₃O₉,explodes and releases gases with a temperature of 1985°C at 1.400 atm.What is the volume of gas produced? 4 C₃H₅N₃O₉(s)→ 12 CO₂(g)+ 10 H₂O(g)+ 6 N₂(g)+ O₂(g)

Each of three identical 15.0-L gas cylinders contains 7.50 mol of gas at 295 K.Cylinder A contains Ne,cylinder B contains F₂,and cylinder C contains Cl₂.According to the kinetic molecular theory,which gas has the highest average speed?

At STP how many liters of NH₃ can be produced from the reaction of 6.00 mol of N₂ with 6.00 mol of H₂? N₂(g)+ 3 H₂(g)→ 2 NH₃(g)

A 0.429-g sample of gas occupies 125 mL at 60.cm of Hg and 25°C.What is the molar mass of the gas?

Assume that you have a mixture of nitrogen (molecular mass = 28 amu),represented by unshaded spheres,and chlorine (molecular mass = 71 amu),represented by shaded spheres at 300 K.Which of the drawings best represents the mixture?

Assume that you have a sample of gas in a cylinder with a moveable piston,as shown in diagram (1).The initial pressure,number of moles,and temperature of the gas are noted on the diagram.Which diagram (2)-(4)most closely represents the result of doubling the number of moles of gas while keeping the pressure and temperature constant?

In the laboratory,hydrogen gas is usually made by the following reaction: Zn(s)+ 2 HCl(aq)→ H₂(g)+ ZnCl₂(aq) How many liters of H₂ gas,collected over water at an atmospheric pressure of 752 mm Hg and a temperature of 21.0°C,can be made from 3.132 g of Zn and excess HCl? The partial pressure of water vapor is 18.65 mm Hg at 21.0°C.