1) When 0.119 g of Zn(s) is combined with enough HCl to make 51.6 mL of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.4 ∘C to 23.9 ∘C. Find ΔHrxn for this reaction as written. (Use 1.0 g/mL for the density of the solution and 4.18 J/g⋅∘C as the specific heat capacity.)

2)Calculate ΔHrxn for the following reaction:

CaO(s)+CO2(g)→CaCO3(s)

Use the following reactions and given ΔH values:

Ca(s)+CO2(g)+12O2(g)→CaCO3(s), ΔH= -812.8 kJ
2Ca(s)+O2(g)→2CaO(s), ΔH= -1269.8 kJ

Discuss three different types of business leases and the merit of each one.

Please give explanation.

Consider the titration of 100.0 mL of 0.200 M CH₃NH₂ by 0.100 M HCl.
For each volume of HCl added, decide which of the components is a major species after the HCl has reacted completely.
K_b for CH₃NH₂ = 4.4 x 10^-4.

300.00 mL HCL added:

yes no  H⁺
yes no  H₂O
yes no  Cl^-
yes no  CH₃NH₂
yes no  CH₃NH₃⁺

Calculate the pH at the equivalence point for this titration?

At what volume of HCl added in this titration does the pH = 10.64? Express your answer in mL and include the units in your answer?

Using values from Appendix C of your textbook, calculate the value of Keq at 298 K for each of the following reactions:

(A) 2 NO(g) N2(g) + O2(g)

(B) 3 NO(g) NO2(g) + N2O(g)

(C) 2 HI(g) H2(g) + I2(g)

Appendix C page screenshots are below:

http://i.imgur.com/fHg7YIC.png

http://i.imgur.com/nGvqHNp.png

http://i.imgur.com/YPDGm2N.png

Perkins Company provides the following data developed for its master budget:

Sales price 11.00 per unit

Costs:
Direct materials 3.00 per unit

Direct labor 4.25 per unit

Variable overhead 0.50 per unit

factory depreciation is 12,000 per month

supervision is 11,000 per month

selling expense is 0.25 per unit

administrative cost 9,000 per month

Required:
Prepare flexible budgets for sales of 20,000, 22,000 and 24,000 units. Use a contribution margin format.

Write down the balanced net ionic equation

Permanganate ion reacts with thiosulfate ion in acidic condition to produce Mn2+ ion and sulfate ion.

what is the primary metabolite guaifenesin is metabolized by O-demethylase?

1. Create a descriptive statistics table for our variables in word for submission (simply export from excel and cleaning it up a bit)

2. Create a table showing the variable names, coefficients, and p-values, indicating which variables are statistically significant for submission (export from excel and clean up a bit)

3. Write out the regression equation for sales here based on excel output:

4. Interpret the coefficient on our own price here:

5. If a manager increases our price by $2 then what is the predicted impact on sales?

1. A 70 kg adult male is exposed to 0.001 ppmv of vinyl chloride (C2H3Cl) in the air at his workplace. Note: this is far below the permissible exposure limit set by OSHA (1 ppmv).

a) Calculate this man’s lifetime cancer risk from this inhalation exposure. Assume temperature and pressure conditions of 20°C and 1 atm. Use exposure factors given in Table 6.14, and the slope factor = 0.295 (mg/kg ・ day)^-1.

b) If this man wants to limit his lifetime cancer risk from inhalation exposure to vinyl chloride to 10^-6, how many years could you work at this job?

Imagine the New Zealand economy is initially at the potential level of output, but that due to a decrease in house prices, the level of consumption within the economy falls (because consumer confidence decreased).

(a) Show what effect this has on the New Zealand economy in the context of an AD-AS diagram.

(i) Label the original long-run equilibrium point "A". Label the short-run equilibrium outcome of the decrease in house prices "B"

(ii) Briefly explain what happens to output and the inflation rate.

(b) Explain and show on your diagram in part (a) what would happen to output and the inflation rate in the long-run if the government does nothing to accommodate this shock. Label this long-run outcome "C".

(c) If the government accommodates this shock, what policies would return the economy to the potential level of output? Explain how these would work, and make sure you also explain what happens to output and the inflation rate.

Which of the following species cannot act as a Lewis base?

a) S²

the proteins containing the following amino acids

61 LYS     12 SER      25 MET

22 HIS      75 GLU     56 ILE

29 ARG     45 PRO     83 LEU

77 ASP   67 GLY   26 TYR

24 TR       65 ALA      47 PHE

71 VAL

A) what its net charge at PH 1

b) What is net charge at ph 13

c) calculate the pI?

You are designing a new system for detecting an explosive device. Your current design has a 1% false negative rate and a 5% false positive rate. The estimated frequency of actual devices through a typical security check point where the system will be employed is 1 in 5,000. Use the variables E to represent the explosive device and D (or D1 and D2) to represent the detector(s).

a)What is the probability that when the detector indicates the presence of an explosive device that the person is actually carrying one? Show your work?

b)On average, how many people will have to be detained and inspected for every device detected?

c)Now suppose you have additional equipment that gives you an independent test for the same types of devices, but it’s noisier: the false negative rate is 5% and the false positive rate is 10%. What is the probability of a device when both of them signal a detection? Show your work.

1. Explain why Critical Infrastructures Systems are so hard to protect and provide a recommendation of how to fix issues these issues for these types of systems.
2. Explain the three tiers of Risk Management and how they work together to provide a Risk Management Strategy for an Organization.
3. Please explain the IRP Process. We discussed 5 steps concerning this.
4. We talked about different Security Laws. In your opinion explain why it is so hard to pass an updated IT Security Law  
5. Explain the Risk Management Process (4 tasks) and explain the 4 ways to respond to risk and provide an example of each.
6. Explain the reason for having a Configuration Management Plan
7. Explain why Critical Infrastructures Systems are so hard to protect and provide a recommendation of how to fix issues these issues for these types of systems.
8. Explain the three tiers of Risk Management and how they work together to provide a Risk Management Strategy for an Organization.
9. Please explain the IRP Process. We discussed 5 steps concerning this.
10. We talked about different Security Laws. In your opinion explain why it is so hard to pass an updated IT Security Law  
11. Explain the Risk Management Process (4 tasks) and explain the 4 ways to respond to risk and provide an example of each.
12. Explain the reason for having a Configuration Management Plan