27. The addition of a strong acid like HCl to an aqueous solution would result in A) an increase in pH. B) the release of H+ into the solution. C) both the release of H+and a decrease in pH. D) both the release of H+ and an increase in pH. E) a decrease in pH.

16. Using the periodic table as your tool, identify the atomic characteristic that would most quickly and efficiently identify any single element. A) number of protons and electrons B) number of shells C) number of neutrons and electrons D) number of neutrons

Combination circuit.png In the combination circuit above, which two paths are parallel?

Combination circuit(4).jpg Refer to the diagram above and solve using the values provided. R1 = 30 Ω, R2 = 600 Ω, and R3 = 1800 Ω, and 240 V is applied between A and B. What is the voltage across R2?

Combination circuit(4).jpg R1 = 240 Ω, R2 = 300 Ω, and R3 = 1200 Ω. What is the resistance between A and B?

Simple combination circuit.png In tracing the path in the combination circuit shown here, how many separate paths can the current flow from the negative terminal to the positive terminal?

parallel circuit.png To what can this circuit be reduced?

II. COMPRENSION B. Cierto o Falso. Indica si la frase es cierta o falsa. . (20 puntos 20X1). 4. En “El almohadón de plumas”, Alicia se enferma, empieza a tener alucinaciones y muere al final de la historia.

Suppose Phineas  is the only inventor and seller of space suits  in town and therefore holds a monopoly on the sale of space suits.  Phineas can offer additional space suits at a constant  $150 per suit (marginal cost).  For simplicity assume that he has no fixed costs.    Show your work for receive full points. The following is the demand schedule for space suits in Phineas’ town:   Quantity of space suits demanded Price of a space suit Total Revenue (TR) Marginal Revenue (MR) 0 $1,000   — 1 $  800     2 $  500     3 $  450     4 $  300 5 $  150 A.  Calculate TR and MR for the quantities in the table above  B. If Phineas acts as a  profit maximizing monopolist,  how many space suits will he offer and what price will he charge? C.  What is Phineas’ profit?  D.   If the market for space suits were perfectly competitive,  what would be the efficient price? E.  If Phineas  was able to price discriminate and also sell his space suits to aliens who have a higher elasticity of demand than humans (the table above) for space suits,  how should Phineas price to aliens and humans?   Hint: You can assume that these markets are segmented and there is no possibility of resale.    

Frito-Lay dominates the snack food business,  with half of all salty snack items.  Competitors say that Frito-Lay has secured its dominant position with shelf-space rentals in retail stores,  paying as much as $40,000 annually to secure prime shelf space in grocery and convenience stores.  “Frito can afford it, ” says a regional rep for a competing company,  “we can’t”. A.   Explain what type of market structure firms in the salty snack foods market operate under.  Why do you say that? B.  What are the costs faced by firms in salty snacks?  Please label whether these costs are fixed or variable,  implicit or explicit. C.   What can competitors do in the face of this dominance by Frito-Lay?  Explain using what you have learned in module 4.