These were defined to solve the problem of counting large numbers of molecules.
what is the reason we use moles in chemistry?
100
Completely consumed reactant.
What is a limiting reactant?
100
Liquid, solid, gas, plasma.
What are the different states of matter?
100
It is less - the others are all gases at room temp.
How does the mass of a water molecule compare to common gases like nitrogen, oxygen, and carbon dioxide?
100
Once equilibrium happens both reactions keep happening but there's no change in reactant or product concentration.
Can change happen with equilibrium?
200
Multiply by the molar mass.
What is the way you go from grams to moles?
200
studies amounts of substances that are involved in reactions.
What does Stoichiometry do?
200
This law defines the relationship between pressure and volume, if temperature and amount of gas is held constant. If the volume of a container is increased, the pressure decreases. If the volume of a container is decreased, the pressure increases.
What is Boyle's Law?
200
Transparent, uniform.
What is the appearance of a solution?
200
Change pressure, temperature or concentration.
What are three ways to stress or change the equilibrium point?
300
It can be interpreted in terms of molecules or in terms of moles.
How may a chemical equation such as H2 + C2 -> 2HCl be interpreted?
300
- Mass of Reactants
- Mass of Products
- Chemical Equations
- Molecular Weights of Reactants and Products
- Formulas of Various Compounds
What do you normally measure in stoichiometry?
300
P1V1 = P2V2
What is the Boyle's law equation?
300
It is a liquid at room temperature, it has a high boiling point, it is a good solvent.
What are some properties of water that are due to hydrogen bonding?
300
If a system at equilibrium is disturbed by applying stress, the system obtains a new equilibrium position to accommodate the change and tends to relieve the stress
Fits any container, medium density, little thermal expansion, and little compression
What are characteristics of a liquid?
400
a stable, heterogeneous mixture of two or more substances.
What is a colloid?
400
The reaction does not go to completion, but rather the products that are formed can react to reform the reactants
What does it mean if a reaction is reversible?
500
6.02 x 10 ^23 particles equal a mole.
How many particles equal a mole?
500
= 0.138 mol MgCl2
2 mol AgCl
What is 0.276 mol AgCl x 1 mol MgCl2 ?
500
1. The size of molecules is negligible compared with the mean inter molecular distance (i.e. they are widely spaced molecules).
2. Molecules move with different speeds and in random directions.
3. Standard laws of motion apply.
4. Collisions between molecules are elastic. Transnational kinetic energy is not converted into other forms of energy.
5. There are no attractive inter molecular forces between molecules except during collision.
What are the five assumptions made with ideal gases?
500
144 g
How many grams of HCl are required to make 10 L of a 0.40 M solution?
500
HCL
Which substance can be classified as an Arrhenius acid?
HCL
NaCl
LiOH
KOH