FL 2 things

Question 1

what is the continuity equation, and what does it mean?

Answer 1

v1A1=v2A2

when the cross sectional area is smaller, the velocity will be greater and vice versa

Question 2

Through which medium do sounds waves travel fastest?

Answer 2

solid.

b/c speed of sound is proportional to the square root of the bulk modulus of the material.

Question 3

Which harmonics can exist in a pipe with a closed end?

Answer 3

odd integers only

n=1,3,5…

Question 4

nuclear effective charge on the periodic table

Answer 4

increases from left to right, descreases down a column (but more emphasis on left to right)

Question 5

what is the effect of temperature on the solubility of gases versus non-gases?

Answer 5

increased temperature increases the solubility (Ksp) of non-gases, and decreases the solubility of gases

Question 6

what type of compound will increase osmotic pressure the most?

Answer 6

the one with the most particles that is the most soluble - contributing the most particles to the solution

Question 7

Which elements are electron withdrawing?

Which are electron donating?

Answer 7

E withdrawing - F, Cl

Donating - N. methoxy (OCH3)

Question 8

mechanism and possible reactants for aldol condensation

Answer 8

f

Question 9

charges that will moves toward cathode and anode?

Answer 9

cathode (+)

anode (-)

Question 10

What are triglycerides?

Answer 10

triesters derived from glycerol and three fatty acids.

Question 11

define efficiency
error in load?
relationships?

Answer 11

efficiency = load + load distance/ effort + effort distance
efficiency directly proportional to load
efficiency % directly proportionate to load error
% load error = absolute error/ actual load
% error increases with smaller loads

Question 12

what is the function of a salt bridge?

Answer 12

prevents buildup of charge in a galvanic cell by releasing cations and anions into separate half-cells

Question 13

What happens when anhydrides are put in water?

Answer 13

highly reactive, so they return to carboxylic acid form

Question 14

Protease preference for amino acid cleaving

Answer 14

trypsin - cleaves peptides at basic (+ charged) amino acids
chymotrypsin - cleaves peptides next to large, aromatic, hydrophobic amino acids
aminopepsidase and carboxypeptidase cleave peptide bonds at either side of the amino acid, and have no preference in which amino acid.