May 2024
Seawater has a natural ______ to _______ (protect) against ______ in pH
capacity, buffer, changes
Equilibrium Keq
If the Keq is less than 1 what is favored in the Reaction?
Products > Reactants
Define the Limiting Reactant (LR)
Reactant that limits the amount of products that can be formed
Why do most materials have no overall charge?
They have equal numbers of protons and electrons
Boyle's Law:
A balloon is filled with 13.97 L of air at a pressure of 6.462 ATM. Calculate the Volume of the balloon if the pressure is changed to 4.61 atm.
19.6 L
Define Pteropods
A group of small sea snails and other marine organisms such as corals
What does [ ] mean?
Concentration
When driving on the road map which direction do you drive?
The direction the arrows on the map are pointing
Opposite charges _____, so the ______ charged hair sticks to the _______ charge balloon
Attract, positively, negatively
Pressure Conversions:
Pressure in Denver, CO is 0.830 ATM. Convert this into mmHg.
631 mmHg
What does ocean acidification result in?
Ocean waters becoming less natural, and harming ocean life
Calculate the {OH] in a aqueous solution at 25 degrees C with 1.0 x 10^-12 M H^+1. Determine the Solution Type.
[1.0 x 10^-2] M, Basic Solution
True or False
You can only start in one town and end in another town when driving on the road map
True
S indicates a what?
Solid
What units do you use to measure temperature when solving "Ideal Gas Law"
K (Kelvin)
What are the levels of the pH scale?
1-6 = acidic
7 = neutral
8-14 = basic
What is a common name for Vitamin C?
Ascorbic Acid
Calculate the molar mass of element F2
38.00 g/mol
Elements combining
Phase change:
Deposition:
The change from _____ to _______
The change from gas to solid
Calculate the pOH of 4.2 x 10^-7 m OH^-1 aqueous solution, (@ 25 degrees c)
pOH = 6.38
What do all Arrhenius Bases all have in common?
They all are blue, and conduct electricity.
Determine LR and ER, then calculate #g NaCl produced if 59.6g FeCl2 reacts with 36.8g Na3PO4
BCE= 3FeCl2(aq) + 2Na3PO4(aq) -----> Fe3(PO4)2(s) + 6NaCl(aq)
MM (FeCl2) = 126.75 g/mol MM (Na3PO4) = 153.94
MM (NaCl) = 58.44 g/mol
0.478 gNa3PO4
Calculate molar mass for Fe3(PO4)2
357.49 g/mol
Physical and Chemical Change:
What kind of change is:
A bicycle changing colors as it starts to rust?
A chemical change.