27.1g CaOx1mol CaO
----------------- = 0.483 mol CaO
56.08g CaO
A sample contains 27.1 g of calcium oxide. How many moles of calcium oxide are in the sample?
100
-Solid
-Liquid
-Gas
What are the three common states of matter?
100
The liquid in which a solute is dissolved to form a solution
What is a solvent?
100
It is determined by how far the equilibrium lies to the right
How is the strength of an acid determined?
200
-It gives a convenient way to express large numbers
-It is useful when converting between grams and atoms or molecules
-It can be applied to any type of object: molecules, atoms, ions, etc.
Why is the mole important?
200
Two hydrogen molecules
How many hydrogen molecules do you need for every oxygen molecule?
200
This law defines the relationship between pressure and volume if temperature and amount of gas is held constant
What is Boyle's Law?
200
Is the property of a solid, liquid, or gaseous chemical substance called solute to dissolve in a solid, liquid, or gaseous solvent to form a homogeneous solution of the solute in the solvent
What is solubility?
200
Process in which measured amounts of known solution are added to an unknown solution to determine its concentration
What is titration?
300
Carbon -12
One mole is the number of particles found in 12.000 grams of:
300
7.45 mol (NH4)3PO4 x 3 mol N
------------- =22.4 mol N
1 mol (NH4)3PO4
How many moles of nitrogen are there in a 7.45 mol sample of ammonium phosphate?
300
P1V1=P2V2
What is the equation to Boyle's Law?
300
It will increase
Will the water solubility of a liquid or a solid increase or decrease with increased temperature?
300
3.73
What is the pH of a solution with [H3O+1]=0.000187?
(pH= -log[H3O+1])