BACK TITRATION OF ASCORBIC ACID

For the standardization, 5 ml of KIO₃ was added, as well as 0.5087 g of solid KI and 2.5 mL of 0.5 M H2SO4. It was titrated with the Na2S2O3 solution previously prepared.

0.01 M KIO3 (+excess KI and acid)           0.07 M Na2S2O3

1- Calculate the ascorbic acid concentration from your manual titration. (HOW TO CALCULATE THE EXCESS IODINE)

IO₃^- + 8I^- + 6H⁺ ?3I ₃^-+ 3H2 O                                

   I₃^- + 2S₂O₃^-2 ? 3I^- +S₄ O₆^-2        

C₆H₈O₆ + I₃^- ? C₆H₆O₇ + 4H⁺ +3I^-

Standardization of Thiosulfate solution

analysis of ascorbic acid

Explain why working and labor conditions are an ethical issue that is currently influencing the international community and what stakeholders are being influenced by this issue and how.

On 26 February, Hong Kong’s Financial Secretary Paul Chan announced that all permanent residents in Hong Kong will receive a HK$10,000 from the HKSAR government. This policy will cost the HKSAR government roughly HK$71 billion and it is aimed at tackling the worse economic downturn that the city has experienced in the last 10 years.

a. Briefly explain why this policy can increase equilibrium output in the short run.

b. An economist argues that if the HKSAR government spends HK$71 billion on goods and services instead of giving each Hong Kong resident a HK$10,000, the policy effect on output would be larger. Briefly discuss the economic rationale behind this economist’s argument.                                              

This is an old classic which I don't think ever got a clear answer. The Gribov-Froissart projection that gives the relativistic version of Regge trajectories treats even angular momentum differently from odd angular momentum. The trajectory functions in general are separate for even and odd angular momentum.

But in QCD, the odd trajectories interpolate the even trajectories in every case--- the two trajectories are degenerate. Is there a way of understanding why the even-odd trajectories are degenerate? Is is a symmetry argument? Can you find a natural system where they are not degenerate?

A quick google search revealed this reference, which doesn't answer the question, but gives an experimental signature for the degeneracy: http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-pub-0576.pdf , There is probably excellent data by now on this.

Explain the links between quality and productivity and quality and cost

In perfectly competitive market, we sum horizontally individual firms’ marginal cost curves and use it as an approximation of the market supply curve. Give justifications for this method.

Why does the aggregate supply have 3 regions? What type of economy would you see if equilibrium occurred in each of these given regions (is it a healthy economy? If not what are some of the problems)?

Maglie Company manufactures two video game consoles: handheld and home. The handheld consoles are smaller and less expensive than the home consoles. The company only recently began producing the home model. Since the introduction of the new product, profits have been steadily declining. Management believes that the accounting system is not accurately allocating costs to products, particularly because sales of the new product have been increasing.

Management has asked you to investigate the cost allocation problem. You find that manufacturing overhead is currently assigned to products based on their direct labor costs. For your investigation, you have data from last year. Manufacturing overhead was $1,580,000 based on production of 350,000 handheld consoles and 85,000 home consoles. Direct labor and direct materials costs were as follows:

Management has determined that overhead costs are caused by three cost drivers. These drivers and their costs for last year are as follows:

Required:

a. How much overhead will be assigned to each product if these three cost drivers are used to allocate overhead? What is the total cost per unit produced for each product? (Round "Total cost per unit" to 2 decimal places.)

b. How much overhead will be assigned to each product if direct labor cost is used to allocate overhead? What is the total cost per unit produced for each product? (Do not round intermediate calculations. Round "Total cost per unit" to 2 decimal places.)

The accounting records of Wall’s China Shop reflected the following balances as of January 1, Year 3:

The following five transactions occurred in Year 3:

1. First purchase (cash): 125 units @ $96
2. Second purchase (cash): 195 units @ $104
3. Sales (all cash): 375 units @ $200
4. Paid $16,100 cash for salaries expense
5. Paid cash for income tax at the rate of 25 percent of income before taxes
   

Required
a. Compute the cost of goods sold and ending inventory, assuming (1) FIFO cost flow, (2) LIFO cost flow, and (3) weighted-average cost flow. Compute the income tax expense for each method.
b. Use a vertical model to show the Year 3 income statement, balance sheet, and statement of cash flows under FIFO, LIFO, and weighted average. (Hint: Record the events under an accounting equation before preparing the statements.)

The parachute on a race car of weight 8150 N opens at the end of a quarter mile run when the car is traveling at 33.6 m/s. What total retarding force must be supplied by the parachute to stop the car in a distance of 1090 m?

write in a long paragraph about the challenges in collecting, managing ,storing, querying, and analyzing various form of big data. use ur own words