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1. One of the most difficult tasks in regression analysis is to obtain the data suitable for quan-


titative studies of this kind. Suppose you are trying to estimate the demand for home fur-


niture. Suggest the kinds of variables that could be used to represent the following factors,


which are believed to affect the demand for any product. Be as specific as possible about


how the variables are going to be measured. Do you anticipate any difficulty in securing


such data? Explain.

Calculate the volume, in mL, of 1.72 M HCl solution that will react with 2.67 mol of CaCO3?


If 160 g of KCI is dissolved in water to make 500ml solution,what is the molarity of the solution?


If an charged object transfers its charges to another uncharged object will it mass be affected? And how does it transfers its charges?


A. If a firm produce and sells q units of a particular product in the market. The total cost of producing q units is given by the function C(q) = 5q + 350 while the price firm received in the market is given by the function D(q) = 50 - q . Find



a. The profit function



b. The break-even value of q



c. The value of q that result in loss

Give examples that illustrate the use of standard heats of formation in calculating changes in enthalpy or ΔH of reactions.


State that values of standard states of formation are important because these are

conveniently used to calculate changes in enthalpy, ΔH of many  reactions.  



Discuss standard state and give examples (Padolina et al., 1995)



  1. Create (4) java classes. Name them RunEmployee, Employee, FullTimeEmployee, PartTimeEmployee. The Runemployee class shall contain the main method and will be used to execute the program.
  2. Write a simple payroll program that will display employee's information. Refer to the UML Class Diagram for the names of the variable and method. This should be the sequence of the program upon execution:
  • Ask the user to input the name of the employee
  • Prompt the user to select between full time and part time by pressing either F (full time) or P (part time).
  • If F is press, ask the user to type his monthly salary. Then, display his name and monthly salary.

If P is pressed, ask the user to type his rate (pay) per hour and the number of hours he worked for the entire month separated by a space. Then, display his name and wage.





1. Define heat of formation/standard heat of formation ΔHfo.


2. Discuss standard state and give examples (Padolina et al., 1995).


3. State that values of standard states of formation are important because these are conveniently used to calculate changes in enthalpy, ΔH of many reactions.


4. Give examples that illustrate the use of standard heats of formation in calculating changes in enthalpy or ΔH of reactions.



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