Chemistry Questions
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T or F The higher the temperature and the lower the pressure, the more negligible the volume of the particles of a gas are (not the volume of the gas, the volume of the individual particles in the gas).
Which of the following is NOT something that must be true to use Gay Lussacs law of combining volumes for a stoichiometry calculation?a. the two substances involved are both gasesb. the reaction is at STPc. the conversion is volume to volumed. pressure and temperature stay constant
T or F In a balanced chemical equation, when gases are held at a constant temperature and pressure, the mole ratios and volume ratios between gases will be exactly the same.
According to Avagadro, the relationship between gas volume and the number of moles at constant temperature and pressure is _.a. directb. tenuous at bestc. quadraticd. inverse
The relationship between volume of a gas and amount of gas is _.a. quadraticb. directc. platonicd. inverse
Use Roman Numerals for which Non metals?
What must be held constant to use Avagadro's Law and Gay Lussacs Law of combining volumes?
Which explains best how 1 mole of ANY ideal gas (regardless of molar mass) is 22.41 L at STP?a. the particles are so far apart that they have virtually no attraction for each otherb. ideal gas particles are constantly movingc. ideal gases can expand indefinitelyd. the particles are so far apart that their individual volumes are inconsequential
T or F If two 1.00 L samples of different gases are at the same temperature and pressure, the two samples will have the same mass.
Which of the following holds a suction cup in place?a. magicb. atmospheric pressure outside the cup pushing it against a surfacec. adhesivenessd. suction inside the cup pulling the cup against a surface
What is the celsius temperature scale based on?a. the freezing and boiling points of waterb. the average temperature of the human bodyc. the number of years in a centuryd. absolute zero
A bicycle tire is inflated to 500. kPa at 15 C. You may assume that the volume of the tire does not change. If the temperature is increased to 30. C it can be said that _.a. the pressure inside the tire will doubleb. the pressure inside the tire will be cut in halfc. the pressure inside the tire will increase, but not be doubled d. the pressure inside the tire will decrease, but not be cut in half
If, in a stoichiometry problem, you are given the volume of a gas as a starting point, but the problem is not at STP and you are asked to convert to grams for your final answer (so no Gay Lussacs Law of Combining Volumes), which of the following will you need to use (as long as temperature and pressure are given).a. Charles Lawb. Ideal Gas Lawc. Avagadros Lawd. Grahams Law
A gas is more likely to behave ideally when it is at _.a. low temperature and high pressureb. high temperature and low pressurec. low temperature and low pressured. high temperature and high pressure
For a constant force, when the surface area is tripled, the pressure is _.a. constantb. divided by 3c. tripled
Which of the following is the correct formula for pressure?a. P = F x Ab. P = F/Ac. P = m/Vd. P = T/A
Which type of gas will follow all the rules of kinetic theory?a. realb. unleadedc. ideald. surreal
A small bottle of perfume has the cap left off and vapors leave through the small opening in the bottle. This is an example of _.a. effusionb. diffusionc. particulationd. confusion
What measurement in an ideal gas law problem indicates which ideal gas constant (R) we should use?a. amountb. pressurec. volumed. temperature
Which of the following can be used to calculate the amount or grams of a gas (if molar mass is known) and is not typically used with initial and final conditions?a. Combined Gas Lawb. Ideal Gas Lawc. Gay-Lussacs Lawd. Boyles Lawe. Charles Law