- The fact that gases are compressible and solids virtually incompressible supports that:
Your answer:
gas and solid constituent particles are in contact with each other.
gas particles are widely separated from each other while particles in a solid are in close contact.
solid particles are widely separated from each other while particles of a gas are in close contact.
gas and solid constituent particles are widely separated in their respective matter states.
- Boyle's law states that:
Your answer:
gas volume is inversely proportional to gas temperature.
gas volume is directly proportional to gas temperature.
gas volume is inversely proportional to gas pressure.
gas volume is directly proportional to gas pressure.
- If the Kelvin temperature scale is considered, Charles's law states that:
Your answer:
gas volume is directly proportional to gas temperature.
gas volume is inversely proportional to gas temperature.
gas volume is directly proportional to gas pressure.
gas volume is inversely proportional to gas pressure.
- In a container of constant volume containing a fixed amount of gas, increasing the gas temperature results in the walls of the container experiencing:
Your answer:
lesser pressure than before the temperature increase.
greater pressure than before the temperature increase.
the same pressure as before the temperature increase.
nothing.
- Avogadro's principle states that:
Your answer:
the volume of a gas is directly proportional to its temperature.
the pressure of a gas is directly proportional to its volume.
the temperature of a gas is inversely proportional to its pressure.
the volume of a gas is directly proportional to its number of moles.
- Which of the following measurement units isn't used to describe gas pressure?
Your answer:
atmosphere (atm)
Pascal (Pa)
Torr
Newton (N)
- Which of the following statements concerning heat is not true?
Your answer:
It is typically defined as the kinetic energy possessed by small, moving particles of matter.
It always flows (is transferred) from the warmer to the colder body.
Its magnitude doesn't depend on the size of the sample.
Its transfer stimulates random thermal motion of molecules in the surroundings.
- Which of the following is not an example of an endothermic reaction?
Your answer:
ice cream melting
water boiling
dry ice sublimation
steam condensation
- Heat transfers are quantitatively measured with simple or complex versions of a:
Your answer:
speedometer.
barometer.
calorimeter.
magnetometer.
- The heat released or absorbed from a system at constant pressure is known as the:
Your answer:
heat quotient.
enthalpy.
state function.
Hess value.
- Hess's law states:
Your answer:
heat is always transferr the warmer to the colder body.
exothermic reactions will always proceed more quickly than endothermic reactions.
the overall reaction enthalpy is the sum of the reaction enthalpies into which the reaction can be divided.
energy can be transformed, but it can't be created or destroyed.
- On a heating curve, the temperature of a sample remains constant at its melting and boiling points until:
Your answer:
the lid of the container holding the substance is removed.
the volume of the sample decreases.
the attractive forces between the sample's particles are overcome.
Hess's law is validated.
- A barometer is the meteorological instrument used to measure atmospheric pressure. True or false?
Your answer:
TrueFalse
- The pressure any substance exerts is defined as the force the substance exerts divided by the mass of the substance. True or false?
Your answer:
TrueFalse
- At STP, standard temperature is 25° C, standard pressure is 1 atm, and the molar volume of a gas is 22.41 liters. True or false?
Your answer:
TrueFalse
- A helium balloon has a volume of 20 L at sea level, where the atmospheric pressure is 0.975 atm. When the balloon rises to a height where the atmospheric pressure is 562 Torr, the balloon bursts. What's the volume (L) of the balloon just before it bursts? Assume a constant atmospheric temperature.
Your answer:
- A 300 mL aerosol can at 25°C and 1.10 atm is thrown foolishly into a campfire. When the temperature inside the can reaches 595°C the can explodes. What was the pressure (atm) in the can before it exploded?
Your answer:
- The mass of dinitrogen trioxide in a 500 mL flask is 92.5 mg at 30.5°C. What is the pressure exerted by the dinitrogen trioxide in atm?
Your answer:
- A 10.5 g piece of lead shot at an initial temperature of 188°C is dropped into 15.0 g of water at 18°C. If the specific heat of lead is 0.129 J/g°C, and the specific heat of water is 4.184 J/g°C, calculate the final temperature of the water. Assume no heat is lost to the surroundings and that the absorbed heat raises the water temperature from its initial reading.
Your answer:
- Suppose that coal of density 1.5 g/cm3 is totally carbon (C). The combustion of carbon happens according to the reaction C(s) + O2(g) -> CO2(g) delta H° = -394kJ The heat produced when a lump of coal of size 8.5cm x 6.5cm x 5.5cm is combusted = 1.4e4 kJ. True or false?
Your answer:
TrueFalse
- The reaction enthalpy for the reduction of hydrazine to ammonia is -41.59 kJ. True or false? Use the following equations to calculate. N2(g) + 2H2(g) -> N2H4(l) delta H° = 50.63 kJ N2(g) + 3H2(g) -> 2NH3(g) delta H = -92.22 kJ
Your answer:
TrueFalse
- The operation of a solar powered calculator is an example of the law of conservation of energy. True or false?
Your answer:
TrueFalse
- An industrial process for the removal of hydrogen sulfide from natural gas is its reaction with sulfur dioxide: 2H2S(g) + SO2(g) -> 3S + 2H2O(g) The volume of sulfur dioxide at 1.00 atm and 298K needed to produce 1.00 kg of sulfur is 254 L. True or false?
Your answer:
TrueFalse