In: Chemistry

A little stuck, could you please show working out?

Which of the following processes represents an oxidation reaction?

1. ?Mg |
||

2. ?2H |
||

3. ?Cu |
||

4. ?I |

Which one of the following processes represents a reduction reaction?

1. ?Zn |
||

2. ? ?2Cl |
||

3. ? ?H |
||

4. Cu |

Remember, in an oxidation process the oxidation no increases and in a reduction process it decreases.

Example: 1. A to A^{+} , oxidation process
as oxidation no. increases from 0 to 1.

2. B^{2+} to B^{3+} ,
oxidation process as oxidation no. increases from +2 to +3.

3. A^{-} to A , oxidation process as
oxidation no increases from -1 to 0

....etc

and

1. A to A^{2-} , reduction process as
oxidation no. decreases from 0 to -2.

2. C^{3+} to C , reduction process as
oxidation no. decreases from +3 to 0.

3. B^{-2} to B^{-3} , reduction
process as oxidation no. decreases from -2 to -3

.... etc.

Thus,

1. Mg to Mg^{2+} : oxidation process, as oxidation no.
increases from 0 to +2.

2. 2H^{+} to H_{2} : reduction process as
oxidation no. decreases from +1 to 0.

3. Cu^{+2} to Cu : reduction process as oxidation no.
decreases from +2 to 0.

4. I_{2} to 2I^{-} : reduction process as
oxidation no. decreases from 0 to -1.

and

1. Zn to Zn^{+2} : oxidation process, as oxidation no.
increases from 0 to +2.

2. 2Cl^{-} to Cl_{2} : oxidation process, as
oxidation no. increases from -1 to 0.

3. H_{2} to 2H^{+} : oxidation process, as
oxidation no. increases from 0 to +1.

4. Cu^{+2} to Cu : reduction process as oxidation no.
decreases from +2 to 0.

I was stuck on the following review problem on hypothesis
testing. Could you please guide me on how to approach this type of
problem?
Stacy, a professional soccer player, had a field goal percentage
(i.e., probability of making a shot) of p0 = 60% before
needing to take a season off to recover from an injury.
(a) Since returning to the game from injury, Stacy has made 13
out of n = 20 shots. Is Stacy's new, post-injury field goal...

I was stuck on the following review problem on hypothesis
testing. Could you please guide me on how to approach this type of
problem?
The following review problem is on hypothesis testing. Freshmen
tend to gain 15 pounds during their first year in college. However,
they try to improve their health during their sophomore year. Let X
denote the weight loss of sophomores after taking an intensive
year-long PE class. Assume that X is normally distributed with
unknown mean µ...

COULD YOU PRETTY PLEASE show this in WORKING NOT EXCEL
5. A bond has maturity of 7 years and pays a 7% coupon rate
(with coupon paid annually).The bond sells at par value.
(1) Calculate the duration and convexity of the bond.
2
(2) Assuming its yield to maturity increases from 7% to 8% with
maturity unchanged. Calculate the predicted price using modified
duration rule, and the percentage error of this rule.
(3) Assuming its yield to maturity increases from...

I am stuck on the
following review problem on confidence intervals. Could you please
guide me on how to approach this type of problem?
A bakery does not keep
track of the number of chocolate chips they put in their cookies.
The number of chocolate chips is normally distributed with mean µ
and variance σ2 = 25, where µ is unknown. A customer
buys a dozen of these cookies, and obtains the simple random sample
31, 23, 42, 44, 28,...

I am stuck on the following review problem on confidence
intervals. Could you please guide me on how to approach this type
of problem?
A bakery does not keep track of the number of chocolate chips
they put in their cookies. The number of chocolate chips is
normally distributed with mean µ and variance σ2 = 25,
where µ is unknown. A customer buys a dozen of these cookies, and
obtains the simple random sample 31, 23, 42, 44, 28,...

Finance: Debt
*Please do not use Excel. If you could show working that would
be amazing and appreciated. Thank you very much
1. A bond with a face value of $10,000 that matures in exactly
seven years has a price of $10,494.63. The coupon rate is 4.2% p.a.
and coupons are paid every six months. Which of the following
figures is the closest to the yield to maturity? ( I know the
answer is C but I do not know...

please show working out. Thank you
a college has put in place a 4 week course of lunchtime exercise
breaks for its staff to see if its employees’ job satisfaction can
be improved. To measure the effectiveness of this program, 10
randomly selected staff in the program were surveyed about their
feelings at work, once at the start of the program and again after
the course. Higher scores indicate higher satisfaction.
The job satisfaction index results for this group were:...

Please show your working and formula (If
possible)
--------------------------
Suppose you take out an $840,000, 20-year mortgage loan to buy a
residential apartment. The interest rate on the mortgage is 4.65%
per annum, and payments are required to be made annually at the end
of each year.
Question:
Construct a mortgage amortisation table showing loan
balance at the beginning of each period, annual repayment amount,
interest payment, the amortisation of the loan and the loan balance
for each year.

PLEASE SHOW WORKING OUT
Calculate the yield spread of the floater when the maturity of the
bond is 3 years and its coupon rate is reference rate + 100 basis
points where the initial reference rate is 9%.

Please show working and explanation
for me.
You are valuing an investment that
will pay you $17,000 per year for the first ten years, $35,000 per
year for the next ten years, and $48,000 per year the following ten
years (all payments are at the end of each year). If the
appropriate annual discount rate is 9.00%, what is the value of the
investment to you today (in whole number)?

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