Stoichiometry
SC6a&b (Solv vs Diss and Dissolving Rates)
SC6c (concentrations)
SC6e (collig. prop.)
SC6g(Bronsted-Lowry A+B)
100
The law that says matter is neither created nor destroyed, and is the basis for stoichiometry and balancing equations
What is the law of conservation of matter?
100
water is used to dissolve most chemicals. This is because water is known as the ________ __________.
universal solvent
100
what measures moles per Liter?
Molarity
100
What does antifreeze to do the freezing point in your engine? Increase or decrease?
decrease/depression/lower
100
Acids and bases are also known as __________ donors and acceptors
(proton, neutron, electron)
proton
200
6.02 x 1023
What is avogadro's number?
200
Why is a water molecule such a great solvent?
BECAUSE IT IS POLAR
200
What is the molarity of a solution with 4 moles of solute in a 1 L solution?
4.0M
200
What are the four colligative properties?
- vapor pressure.
- boiling point.
- freezing point.
- Osmotic pressure.
200
Is ammonia (NH3) considered an acid or a base?
base
300
Given: N2(g) + 3H2(g) → 2NH3(g)
How many moles of Nitrogen are needed to produce 2 moles of NH3?
2 mol N2
300
Solubility usually __________(incr or decr) as temperature increases
increases
300
What is the molarity of a solution with 72 grams of HCl in 1L of solution?
2.0M
300
If boiling point increases, will vapor pressure of the solution increase or decrease?
decrease/lower
300
What is the conjugate base of NH4?
NH3
400
Given: N2(g) + 3H2(g) → 2NH3(g)
How many moles of Nitrogen are needed to produce 1.4 moles of NH3?
0.7 mol NH3
400
Describe the saturation of NaCl at 30g per 100g of water and 90 degrees celsius
unsaturated
400
How many moles of HCl are needed to make 800mL of a 2.5M solution?
2 mol HCl
400
What does nonvolatile mean?
less likely to become a gas
400
What is the conjugate acid for Cl-
HCl
500
Given: N2(g) + 3H2(g) → 2NH3(g)
How many grams of Nitrogen are needed to produce 3.2 grams of NH3?
0.094 g N2
500
What is the x-axis on a SOLUBILITY GRAPH????
grams per 100 g of water
500
How many grams of HCl are needed to make 250mL of a 0.18M solution?
1.62 grams HCl
500
What can you add to water to make it boil faster by decreasing the boiling point?
Salt
500
Phenolphthalein is an acid-base indicator. It is clear if the solution is acidic but turns _______ if the solution is a base
PINK