Part III (Plus answers to questions posted in the laboratory manual):

i) What are Q, [Ag+(aq)anode], and [Ag+(aq)cathode] when Emeasured becomes 0 mV for a concentration cell prepared from half cells having initial concentrations of 1.0 and 0.01 M. respectively?

ii) Assuming that both solution volumes were 10.0 mL for the concentration cell described in the above question, how much electricity (in coulombs) flowed from the time the circuit was completed until equilibrium was established?

A 3-kg mass of metal of specific heat = 0.1 kcal/kg°C at a temperature of 600°C is dropped into 1.0 kg water at 20°C. With no heat losses to the surroundings, determine the equilibrium temperature of the mixture, and if it is 100°C, calculate what mass of water is turned into steam at this temperature.

Group of answer choices 100°C and 110 g of steam 100°C and 150 g of steam 100°C and 130 g of steam 100°C and 70 g of steam The equilibrium temperature is not 100°C.

What is the [H3O + ] concentration of a solution formed by mixing 50.0 mL of 0.20 M HCl and 50.0 mL of 0.10 M NaOH?

Given 100.0 mL of a buffer that is 0.50 M in HOCl and 0.40 M in NaOCl, what is the pH after 10.0 mL of 1.0 M NaOH has been added? (Ka for HOCl = 3.5  108 ).

What is the pH of a solution prepared by mixing 50 mL of a 0.10 M solution of HF with 25 mL of a 0.20 M solution of NaF? (The pKa of HF is 3.14.)

During Burns Company's first year of operations, credit sales totaled $168,000 and collections on credit sales totaled $119,000. Burns estimates that bad debt losses will be 1.0% of credit sales. By year-end, Burns had written off $440 of specific accounts as uncollectible. Required: 1. Please help me prepare all appropriate journal entries relative to uncollectible accounts and bad debt expense. 2. I have too Show the year-end balance sheet presentation for accounts receivable. Thanks!

A 10-cm-long thin glass rod uniformly charged to 13.0 nC nC and a 10-cm-long thin plastic rod uniformly charged to - 13.0 nC nC are placed side by side, 4.20 cm cm apart. What are the electric field strengths E 1 E1E_1 to E 3 E3E_3 at distances 1.0 cm, 2.0 cm, and 3.0 cm from the glass rod along the line connecting the midpoints of the two rods? Specify the electric field strength of E1, E2, E3?

A population of 120 pea plants were examined. Three colorations existed within the population; 70 red (RR), 43 pink (Rr), and 7 white (rr). Calculate the 1) number of each allele and the 2) allele frequencies. Using the Hardy-Weinberg equilibrium equation (p2 +2pq+q2=1.0) calculate the 3) genotype frequencies. Based on a population size of 120 pea plants, 4) what is the predicted numbers of each genotype? 5) How does the predicted compare to the observed population? Show your work.

Your company has a target capital structure of 40% debt, 15% preferred, and 45% common equity. Your bonds carry a 9% coupon, have a par value of $1,000, and 7 years remaining until maturity. They are currently selling for $950.51. The cost of preferred is 7.50%. The risk free rate is 4%, the market risk premium is 8%, and beta is 1.0. The firm will not be issuing any new stock, and the tax rate is 40%. What is its WACC?

a. 6.96% b. 8.93% c. 7.68% d. 7.59% e. 6.69%

Expected Return: Discrete Distribution

A stock's return has the following distribution:

Calculate the stock's expected return. Round your answer to two decimal places.

  %

Calculate the standard deviation. Do not round intermediate calculations. Round your answer to two decimal places.

  %

A 100 g ball moving to the right at 4.1 m/s catches up and collides with a 450 g ball that is moving to the right at 1.0 m/s.

A. If the collision is perfectly elastic, what is the speed of the 100 g ball after the collision?

B. If the collision is perfectly elastic, what is the speed of the 450 g ball after the collision?

Express your answer to two significant figures and include the appropriate units.

I have been looking for the answer for a long time, I've had a lot of people get it wrong. Please.

What is the effect of the following changes in the O2 affinity of hemoglobin? (a) A drop in the pH of blood plasma from 7.4 to 7.2. (b) A decrease in the partial pressure of CO2 in the lungs from 6 kPa (holding one’s breath) to 2 kPa (normal). (c) An increase in the BPG level from 5 mM (normal altitudes) to 8 mM (high altitudes). (d) An increase in CO from 1.0 part per million (ppm) in a normal indoor atmosphere to 30 ppm in a home that has a malfunctioning or leaking furnace.