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Balance the following redox reactions: (8pts, 4pts each)

              a) Cu (s) +  NO3(aq)       à      Cu2+(aq)     +  NO (g)        (acidic medium)

Oxidation Half Reaction:


Reduction Half Reaction:



Net Reaction:

 

 

 

              b)  MnO4- (aq) +  NO2-(aq)        à   Mn2+ (s)   +  NO3- (aq)     (basic medium)

Oxidation Half Reaction:


 

Reduction Half Reaction:


 

Net Reaction:

 

 


Pls Help me

Assign oxidation number to all atoms in each of the following: (10pts)

  1.    AuCl3         Au = ____     Cl = ____
  2.    H2O2          H = ____    O = ____
  3.    O3            O = ____
  4.    Na2C2O4        Na = ____   C = ____    O = ____
  5.    SO3             S = ____    O = ____


4. A concentration cell is constructed by placing identical Cu electrodes in two Cu2+ If the concentrations of the two Cu2+solutions are 1.0 M and 0.0020 M, calculate the potential of the cell. (3pts)

 

 

 

 

5. Calculate the potential (in volts) for the voltaic (or galvanic) cell indicated at 25o (3pts)

Ga | Ga3+ (10-6 M) || Ag+ (10-4 M) | Ag



given z1 = 2<45 degrees, z2 =3<120 degrees and z3 =4<180 degrees. determine the following and leave your answer in rectangular form.

  1. (z1)2+z2/z2+z3
  2. z1/z2z3


1. SJS Company has been selling to retail customers in the Metro Manila area. They advertise

extensively on radio, print ads, and in the internet. The owner would like to review the

relationship between the amount spent on advertising expense ( in 1000s) and sales (in ₱000s).

Below is information on advertising expense and sales for the last 9 months.

Month Jan Feb Mar Apr May Jun Jul Aug Sept

Advertising

Expense 10 14 12 9 13 15 8 13 16


Sales

Revenue 180 170 190 220 235 208 215 175 250


A 1.5 nC particle with an initial velocity of 4.75x106 m/s along the positive x-axis enters a region of uniform magnetic field and electric field The magnetic field is 3.25 T along the positive y-axis calculate the magnitude and direction of the electric field if the particle passes the region undeflected

(A) Stress-strain curves of (1) the metal and (2) the fibers, respectively.


(i)


It is required that the composite containing one type of fiber must have an elastic


modulus no less than 200 GPa, and that the fibers carry no more than 75% of the total


load applied along the longitude direction. Suggest the appropriate type of fiber and


calculate the associated volume fraction.

. The hospital record shows that the mean weight of newly born baby is greater than 7 lbs. A researcher takes a sample of 25 newly born babies and found to have a mean weight of 6.97lbs with the standard deviation of 0.77 lbs. Test the claim at 0.05 level of significance.




Treatment of a 0.25000-g sample of impure potassium chloride with an excess of AgNO3 resultion of 0.2912g of AgCl. Calculate the percentage of CCl in the sample.

A rural health unit conducted a survey on the heights of the male aged 18 to 24 years old it was found out that the mean height of male aged 18 to 24 years old was 70 inches test the hypothesis that the mean height of the male aged 18 to 24 years old is not 70 inches if a random sample of 20 male aged 18 to 24 years old had a mean height of 65 inches with a standard deviation of 3 use 1% level of significance

describe the tone used in each of the texts. in your description explain first what you understand tone to be and then state the similarities or difference, if any between the time adopted by creators of the two texts


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