What is the potential of a cell made up of Zn|Zn²⁺ and Cu|Cu²⁺ half-cells at 25^o C if [Zn²⁺] = 0.25 M and [Cu²⁺] = 0.15 M?

(Answer should be E = +1.09 V but I need to know how to get to that)

QUESTION 1
Wisliv Ltd was incorporated on the 01/06/16. The opening balance sheet of the company was as follows: Cash at bank GHS984000, share capital (60,000 ordinary shares of GHS 16.40 each) GHS984,000.
During June the company intends to make payments of GHS 656,000 for a freehold property,            GHS 164,000 for equipment and GHS98,400 for a motor vehicle. The company will also purchase an initial trading stock costing GHS360,800 on credit.
    The company has produced the following estimates:
i. Sales for June will be GHS131,200 and will increase at the rate of GHS49,200 per month until September. In October, sales will rise to GHS360,800 and this will be maintained for the subsequent months.

ii. The gross profit margin on goods sold will be 25%.

iii. There is a risk that supplies of trading stock will be interrupted towards the end of the accounting year. The company, therefore, intends to build up initial level of stock (GHS 360,800) by purchasing GHS 16,400 of stock each month in addition to the monthly purchases necessary to satisfy monthly sales. All purchases of stock (including the initial stock will be on one month’s credit).

iv. Sales will be divided equally between cash and credit sales. Credit customers are expected to pay two months after the sale is agreed.

v. Wages and salaries will be GHS 14,760 per month. Other overheads will be GHS8,200 per month for first four months and GHS 10,660 thereafter. Both types of expenses will be payable when incurred.


vi. 80% of sales will be generated by sales people who will receive 5% commission on sales. The commission is payable one month after the sale is agreed. The company intends to purchase further equipment in November 2016 for GHS 11,480 cash.

vii. Depreciation is to be provided at the rate of 5% per annum on freehold property and 20% per annum on equipment. (Depreciation has not been included in the overheads mentioned above in (v) above.


Required
Prepare a cash budget for Wisliv Ltd. for the six month period to 30/11/16.

Question 2
The Sock company buys hiking socks for GHS6 per pair and sells them GHS10. Management budgets monthly fixed costs of GHS12,000 for sales volume between 0 and 12,000 pairs.

Required
Consider the following questions separately by using the foregoing information each time.
i. Calculate the breakeven point in units.

ii. The Sock Company reduces its sales price from GHS10 per pair to GHS8 per pair. Calculate the new breakeven point in units.


iii. The Sock Company finds a new supplier for the socks. Variable costs will decrease by GHS1 per pair. Calculate the breakeven point in units.

iv. The Sock Company plans to advertise in hiking magazines. The advertising campaign will increase total fixed costs by GHS2,000 per month. Calculate the new breakeven point in units.

v. In addition to selling hiking socks, the Sock Company would like to start selling sports socks. The Sock Company expects to sell one pair of hiking socks for every three pairs of sports socks. The Sock Company will buy the sports socks for GHS4 per pair and sell them for GHS8 per pair. Total fixed costs will stay at GHS12,000 per month. Calculate the breakeven point in units for both hiking socks and sports socks.

What is the purpose of performing mixed melting point experiments? For example, if your unknown is phenacetin, what do you expect to see with a mixed melting point experiment using your unknown and phenacetin out of a bottle? What do you expect to see with a mixed melting point using your unknown and acetanilide out of a bottle?

In the photoelectric experiment, green light, with a wavelength of 522 nm is the longest-wavelength radiation that can cause the photoemission ofelectrons from a clean sodium surface.

1. a) What is the work function of sodium, in electron-volts?

2. b) If UV (ultraviolet) radiation of wavelength 250 nm is incident to the sodium surface, whatwill be the kinetic energy of the photoemitted electrons, in electron-volts?

An experiment is designed to test the potency of a drug on 10 rats. Previous animal studies have shown that a 10-mg dose of the drug is lethal 5% of the time.

1. What is the probability that exactly 0 rats will die?
2. What is the probability that 1 or more rats will die?
3. What is the mean (or the expected number of deaths) and standard deviation for this probability distribution?

1) When the percent recovery is less than 100%, where is most of the uncovered material and how might you go about recovering it if you needed to? (three of fewer sentences)

2) Hot filtration was not necessary in the recrystallization of phthalic acid but was necessary in the recrystallization of naphthalene. Why was it necessary in the recrystallization of naphthalene?

Both of these are about a recrystallization experiment.

Please no cursive

1) Draw the structure of caffeine and determine the most basic nitrogen and specifically explain your rationale with the use of Lewis structures. You may need to research this.

2) The purpose of synthesizing a caffeine derivative involves melting points. Draw the structure of the specific derivative from THIS experiment, and explain how it differs from caffeine.

In the Anfinsen protein folding experiment the sequence of removing urea or BME makes a difference for functional refolding of the protein. Explain why removing BME first leads to a nonfunctional enzyme, but removing urea first leads to a functional enzyme. Why does adding small amounts of BME alone to the solution with the nonfunctional enzyme "rescue" the function

biochemistry

An antibiotic, which is also used as an anticancer drug, was isolated from Streptomycetes bacteria. Its elemental analysis gives the following composition (by weight):

%C 57.89

%H 6.87

%N 13.97

%O 21.27

The formula weight is found (in a seperate experiment) to be NEAR 1300g/mole. Determine the MOLECULAR FORMULA of the antibiotic. show ALL work.

1.) Define standard temperature and pressure(STP). What is the value of the molar volume of any ideal gas at STP?

2.) What type of reaction is used to determine the yield of hydrogen gas in this experiment? Explain choice.

3.) How many grams of hydrogen can be expected from complete reaction of 1.0 g of Mg? Show work!