The volume of a fixed mass of a gas is directly proportional to it’s Kelvin temperature if the pressure is kept constant.
V1/T1 = V2/T2
100
The conversion of a liquid to a gas
What is vaporization?
100
Change 10 moles of Na to grams
230 g Na
100
What is the molarity of a 2.3 L solution containing 6 moles of KNO3?
6/2.3 = 2.61 M
100
The rule of thumb for dissolving liquids
What does "Like Dissolves Like" mean?
200
What shape do directly proportional graphs look like?
Straight line
200
What is the Standard Temperature & Pressure when working with gases (in celsius, kPa, & mmHg)?
0 ºC, 101.3 kPa, 1 mmHg
200
??? = |Actual/Theoretical|*100
Percent yield
200
What does it mean to for a solution to be saturated?
It has all the dissolved solute possible at that temperature.
200
To dilute something is to...
Lower the concentration
300
If a gas has a volume of 250mL, and 220 kPa and the volume is reduced to 150 mL, what will the pressure be?
P2= 366.7 kPa
300
A gas sample has a pressure of 67.5 kPa. What is the pressure in millimeters of Mercury?
506.4166 mmHg
300
In a chemical reaction, what is the difference between excess & limiting reagent?
Excess reagent is what is not used up at the end of the equation.
Limiting reagent is what is completely used up.
300
The physical state in which the opposing processes of dissolution and crystallization of a solute occur at equal times
What is solubility equilibrium?
300
A solution is (heterogeneous or homogeneous)
A homogeneous mixture
400
A gas is 217 ºC and has a pressure of 4 atm. What temperature does the gas have to be so that the pressure is 3.5 atm?
T2=428.8 K or 155.8 ºC
400
1. Gases have small particles traveling in a straight line
2. Gases don't occupy volume
3. No energy's gained or lost in collisions between molecules
4. No attraction or repulsion between molecules
5. Average kinetic energy of a molecule is 3KT/2
What are the 5 postulates of kinetic theory?
400
What is the mass in grams of 5.08 x 10^19 molecules of Sr2 (PO4)2?
.04 g Sr3 (PO4)2
400
Where is the Tyndall effect seen?
Colloid
400
What is a nonelectrolyte?
A substance that dissolves in water to give a solution that does not conduct an electric current
500
How many grams of O2 are in a sample that has a volume of 2.20 L, a temperature of 328 K, and a pressure of .95 atm?
Mass= 2.49 g O2
500
What is an allotrope?
Two or more different molecular forms of an element in the same physical state.
500
.56 moles of Na2O reacts with excess water to completion. Calculate the following:
[Na2O + H2O --> 2 NaOH]
a. Mass of NaOH produced
b. Mass of H2O used
a. 44.8 g NaOH
b. 10.08 g H2O
500
If a system at equilibrium is disturbed it will move to form a new equilibrium to relieve stress.
What is Le Châtelier's Principle?
500
Create a phase diagram of a gas to liquid (& vice versa) and a gas to a solid (& vice versa)
Gas -> liquid = condensation
Liquid -> gas = vaporization
Gas -> solid = deposition
Solid -> gas = sublimation