The substance that is completely consumed in a chemical reaction, causing the reaction to complete. The total amount of product formed is limited by this substance, since the reaction cannot proceed further without it.
What is a limiting reagent?
100
The three types of stoichiometry problems:
What are mass-mass, mass-volume / volume-mass, and volume-volume?
100
The gradual mixing of two gases due to their spontaneous, random motion.
What is diffusion?
200
Avogadro's Gas Law
What is V = kn?
200
These are the best places on the body to apply perfume, because they emit heat, making the perfume diffuse more.
What are pulse points?
200
The volumes reacting gases and their products at constant temperature and pressure can be expressed as rations of small whole numbers.
What is Gay-Lussac's Law of Combining Volumes?
200
The calculation path to get from volume A --> mass B
What is volume A --> moles A --> moles B --> mass B
200
The process whereby the molecules of a gas confined in a container randomly pass through a tiny opening in the container.
What is effusion?
300
atm (atmospheres), Pa (Pascals), and mm Hg (millimeters of mercury)
What are three ways that pressure can be measured?
300
The basic ingredients in perfume.
What are water, alcohol, and extract oils?
300
22.4 L
What is the volume occupied by one mole of any gas at STP, also known as the standard molar volume of gas?
300
124.5 mL of gas at 18 *C and pressure 0.965 atm contains ________ moles.
What is 0.00503?
300
This depends only on the temperature of the gas, and equals (1/2)mv^2
What is the average kinetic energy of the molecules in any gas?
400
P1V1/T1 = P2V2/T2
What is the Combined Gas Law
400
A lighter-scented perfume has a higher concentration of __.
What is alcohol?
400
The value of R when P is in atmospheres, V is in liters, and T is in Kelvin.
What is 0.0821 (L * atm) / (mol * K)?
400
55 grams of oxygen gas and an excess of hydrogen at 850 *C and 12.4 atm will produce ____ liters of water
What is 8.15 liters
400
(rate of effusion of a / rate of effusion of b) =
[(√molecular velocity of b) / ( √molecular velocity of a)]
What is Graham's Law of Effusion?
500
The ideal gas law can be used to calculate gas pressure, volume, temperature, or number of moles when three of these four variables are known. It can also be used to calculate __________.
What are the density or molar mass of a gas sample?
500
Cool, dry places with little light.
What are optimal perfume storing conditions?
500
Two balloons with equal volumes of gas have equal number of molecules, regardless of __________
What is the type of gas in the balloons?
500
25 L of gas at 0.5 atm and 300 K contains _______ moles
What is 0.51
500
These must be constant for Graham's Law to be applicable.