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Reactions
Stoichiometry
Gases
Solutions
Acids and Bases
100
Represents the number of molecules of reactants or products in a chemical equation.
What are coefficients?
100
To convert moles of one substance to moles of another, you use this.
What is mole ratio?
100
The phase change the results in a gas (high-energy particles) escaping from the surface of a liquid is known as _____.
What is evaporation?
100
The solid that comes out of a solution.
What is a precipitate?
100
It dissolves in water to form OH- ions.
What is a base?
200
The type of reaction if chlorine replaces the anion in a reacting compound.
What is a single replacement reaction?
200
The formula for the smallest whole number ratio of elements in a compound
What is the empirical formula?
200
At STP, which is _______and ______, one mole of gas has this volume.
What is zero degrees Celcius, one atomosphere, 22.4 L?
200
A solution with a low concentration of solute.
What is a dilute solution?
200
A solution with a pH of 9.3 which has only partially dissociated.
What is a weak base?
300
When balancing a chemical equation, these can never be changed.
What are subscripts?
300
This determines the theoretical yield and is completely used up in a chemical reaction.
What is limiting reagent?
300
When temperature increases, pressure does this at constant volume and amount.
What is increases?
300
This is not changed when a solution is diluted.
What is moles of solute?
300
A mixture made of a weak acid and its conjugate base or a weak base and its conjugate acid.
What is a buffer?
400
Cations in the reacting compounds switch places.
What is a double replacement reaction?
400
The molar mass of aluminum sulfate.
What is 342.14 g/mol?
400
If barometric pressure is 1 atm and water vapor pressure at 20 degrees Celsius is 18 mmHg, the pressure of oxygen gas when it is collected over water.
760-18 = 742 mmHg
400
The meaning of "like dissolves like."
What is polar solvents dissolve polar solutes and nonpolar solvents dissolve nonpolar solutes?
400
What is the conjugate acid of HSO3-
What is H2SO3?
500
The balanced equation when magnesium hydroxide (Mg(OH)2) reacts with phosphoric acid (H3PO4) to form magnesium phosphate and water.
What is 3 Mg(OH)2 + 2 H3PO4 > Mg3(PO4)2 + 6 H2O?
500
When hydrogen gas combines with nitrogen gas to form ammonia, what is the conversion factor to change moles of hydrogen to moles of ammonia?
What is 2 moles of NH3 / 3 moles of H2
500
If temperature is cut in half and pressure is doubled, the volume of a balloon will do this.
What is decrease to 1/4 its original volume?
500
These factors will decrease the solubility of a gas in a liquid.
What are decreased pressure above the liquid, increased temperature, and agitation.
500
The pH of a solution with a hydroxide ion concentration of 4.5 x 10 -10
What is 4.65?