For the following reaction: Ni2+(aq) + Co(s) ⇌ Ni(s) + Co2+(aq)
a) Calculate E0 (E^0)
b) Calculate G0 (delta G^0)
c)Calculate K
d) If you start with 10.0 g of Ni and 10.0 g of Co in 100.0 mL solution (containing 1.0 M solution of CoCl2 and 0.0000100 M solution of NiCl2 ) which way the reaction will move toward in order to reach equilibrium?
e) Calculate the G (delta G) for the reaction in part d.
f)Calculate the equilibrium concentration of Co2+ and Ni2+.
In: Chemistry
The acceleration of certain objects is studied in an
experimental test track for automobiles. The distance traveled by
an object L is measured as a function of time t to yield the
following:
t (s) 0.1 0.2 0.5 1.0 1.5 1.8 2.0 3.0
L (m) 0.26 0.55 1.56 3.90 7.41 10.28 12.6 30.
Obtain a best fit to this data, considering first-, second, and third-order polynomials. Using these polynomials, calculate the values of the dependent variable L at the time intervals employed for the given data to evaluate the accuracy of the polynomial representations. Discuss the results obtained.
In: Mechanical Engineering
In the following problem, check that it is appropriate to use
the normal approximation to the binomial. Then use the normal
distribution to estimate the requested probabilities.
It is estimated that 3.6% of the general population will live past
their 90th birthday. In a graduating class of 758 high school
seniors, find the following probabilities. (Round your answers to
four decimal places.)
(a) 15 or more will live beyond their 90th birthday
1.0
(b) 30 or more will live beyond their 90th birthday
(c) between 25 and 35 will live beyond their 90th birthday
(d) more than 40 will live beyond their 90th birthday
In: Statistics and Probability
Consider the following unbalanced equation at some constant temperature: CO2(g) ⇌ CO(g) + O2(g) K = 9.7 x 10-6 In an experiment, 5.5 mol of CO2 and 3.1 mol of CO are initially placed into a 1.0 L rigid container. Calculate the concentration of O2 when the reaction has reached equilibrium. Please use the correct number of significant figures when entering your answer and enter your answer using exponential format. For example 1.00 x 10-27 should be entered as 1.00E-27.
In: Chemistry
Consider the following unbalanced equation at some constant temperature: CO2(g) ⇌ CO(g) + O2(g) K = 9.7 x 10-6 In an experiment, 5.5 mol of CO2 and 3.1 mol of CO are initially placed into a 1.0 L rigid container. Calculate the concentration of O2 when the reaction has reached equilibrium. Please use the correct number of significant figures when entering your answer and enter your answer using exponential format. For example 1.00 x 10-27 should be entered as 1.00E-27.
In: Chemistry
The initial amounts are given for the reactants, and a final observed concentration for the product. If these amounts are sufficient to permit equilibrium to be reached (you must determine this) calculate Keq for the reaction at this temperature. (Hint: notice the phase of each participant.) Assume V = 1.0 L
Balanced chemical equation: 6 H2 (g) + P4 (s) <-> 4 PH3 (g)
initial amounts: (6 H2) 3.86 x 10^(−3) / (P4)M 0.500 g/ (4PH3) 6.05 x 10^(−5)M
equilibrium concentration: 1.27 x 10^(−4) M
In: Chemistry
Question # 03
Mr. Hatim hold a diversified portfolio consisting of Pakistan State
Oil, OGDC, Mobilink, Fauji Fertilizer Company, Zeal Pak Cement and
KAPCO. He made an investment of Rs. 10,000 in each common stock.
Beta of the portfolio is 1.17. After analyzing the market trends he
decided to sell Zeal Pak Cement with a beta of 1.0 for Rs.10,000
and use the proceeds to buy Pakistan Tobacco Company with a beta of
1.65. On the basis of provided information what would be the new
portfolio beta that Mr. Hatim holds?
In: Finance
An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such that it would produce a mean pressure of 4.2 pounds/square inch. It is believed that the valve performs above the specifications. The valve was tested on 170 engines and the mean pressure was 4.44 pounds/square inch. Assume the standard deviation is known to be 1.0 A level of significance of 0.02 will be used. Determine the decision.
- How do I find the critical value of Z once the Z test statistic is found? I'm not sure what the process is to finding this number.
- Is the Z test statistic = .766965?
In: Statistics and Probability
A mixture of 0.02958 mol of O2, 0.01705 mol of NOCl, 0.03162 mol of NO2, and 0.008375 mol of Cl2 is placed in a 1.0-L steel pressure vessel at 2458 K.
The following equilibrium is established: 1 O2(g) + 2 NOCl(g) 2 NO2(g) + 1 Cl2(g)
At equilibrium 0.005233 mol of Cl2 is found in the reaction mixture.
(a) Calculate the equilibrium partial pressures of O2, NOCl, NO2, and Cl2.
Peq(O2) = .
Peq(NOCl) = .
Peq(NO2) = .
Peq(Cl2) = .
(b) Calculate KP for this reaction.
KP = .
In: Chemistry
A mixture of 0.09581 mol of C2H4, 0.02766 mol of N2, 0.04516 mol of NH3, and 0.08098 mol of C6H6 is placed in a 1.0-L steel pressure vessel at 731 K.
The following equilibrium is established:
3 C2H4(g) + 1 N2(g) 2 NH3(g) + 1 C6H6(g)
At equilibrium 0.006932 mol of N2 is found in the reaction mixture.
(a) Calculate the equilibrium partial pressures of C2H4, N2, NH3, and C6H6.
Peq(C2H4) = .
Peq(N2) = .
Peq(NH3) = .
Peq(C6H6) = .
(b) Calculate KP for this reaction.
KP = .
In: Chemistry