A project involves the following activities, their predecessors, and the times (in weeks) associated with each activity.

What is the probability that the project will be finished in 21 weeks or less?

What is the probability that the project will take between 19 to 21 weeks to be completed?

If we want a 95% chance of completing the project on time, how far ahead of the schedule meeting time should the project be started?

If activity F is delayed and takes 10 weeks to complete, would the project completion time be any different? If yes, what would be the critical path and the expected completion time?

1. Consider this reaction:

H₂(g) +    O₂ (g)     à       H₂O (g)                                          dHo = __________

1. Balance the equation and put the correct number of moles in the equation above. (1 point)

2. Classify the forward reaction as (1) Combustion, (2) Decomposition, (3) Single replacement, (4) Double replacement, (5) Neutralization, (6) Synthesis. Circle the correct answer. (1 point)

3. In this reaction did Hydrogen get oxidized or reduced? Circle the correct answer. (1 point)

4. Based on your answer above is Hydrogen an oxidizing or reducing reactant? Circle the correct answer. (1 point)

5. In this reaction did Oxygen get oxidized or reduced? Circle the correct answer. (1 point)

6. Based on the answer above, is Oxygen an oxidizing or reducing agent? Circle the correct (1 point)
   
7. Calculate the dHo of the Synthesis reaction using the values from the table in Appendix 2. Show your work. (2 points)

8. If 4 moles of H2 is used in a balanced equation for the synthesis reaction, how many moles of water will be produced (without using the tables). Show your work. (1 point)

9. If 4 moles of H2 is used for the Synthesis reaction, calculate the enthalpy of the reaction without using the tables. Show your work. (1 point)

10. If 4 moles of H₂O is required to be produced, how many moles of H₂ and how many moles of O₂ will be required (without using tables). Show your work. (1 point).

11. If 1 mole of water is required to be produced, how many moles of H₂ and O₂ will be required (without using tables)? Show your work. (1 point)

12. If 6 moles of water is decomposed, how many moles of H₂ and O₂ will be formed? (1 point)

13. If 6 moles of water is decomposed, calculate the enthalpy of the reaction without using the values from the table available in Appendix 2 of your textbook. (2 points)

Java program

Reverse polish notation: using stack - You can use the Stack included in java.util.Stack (or your own implementation) for this problem.

Reverse Polish notation is a notation where every operator follows all of its operands. For example, an expression (1+2)*(5+4) in the conventional Polish notation can be represented as 1 2 + 5 4 + * in the Reverse Polish notation. One of advantages of the Reverse Polish notation is that it is parenthesis-free.

Write a program which reads an expression in the Reverse Polish notation and prints the computational result.

An expression in the Reverse Polish notation is calculated using a stack. To evaluate the expression, the program should read symbols in order. If the symbol is an operand, the corresponding value should be pushed into the stack. On the other hand, if the symbols is an operator, the program should pop two elements from the stack, perform the corresponding operations, then push the result in to the stack. The program should repeat this operations.

Input: An expression is given in a line. Two consequtive symbols (operand or operator) are separated by a space character.

You can assume that +, - and * are given as the operator and an operand is a positive integer less than 10⁶

Output: Print the computational result in a line.

Constraints:

2 ≤ the number of operands in the expression ≤ 100
1 ≤ the number of operators in the expression ≤ 99
-1 × 10⁹ ≤ values in the stack ≤ 10⁹

Sample Input 1

1 2 +

Sample Output 1

3

Sample Input 2

1 2 + 3 4 - *

Sample Output 2

-3

In an atom, what is the maximum number of electrons that can have the following quantum numbers? n=3, I=2, mI=-2 and n=4, I=1, mI=+1 Please explain and thank you so much!

find the riemann sum f(x)=x^2 +3x over the interval [0,8] where x₀ =o, x₁=1 , x₂=6, x₄=8, and c₁=1, c₂=2, c₃=4, c₄=6

1. Calculate the “characteristic rotational energy,” ℏ2/2I, for the O2 molecule whose bond length is 0.121 nm.

2. What are the energy and wavelength of photons emitted in an l = 3 to l = 2 transition?

Answers:

1) 1.79×10−4 eV

2) 1.16 mm

QUESTION 21

1. Enterprise Rent-a-Car targets people whose cars are being repaired following a car accident.  It does this to avoid direct competition with large rental companies.  This is an example best described in class as:

   	1.	Market segmenting
   	2.	Product segmenting targetnig
   	3.	Niche market targeting
   	4.	Local area targeting

1 points   

QUESTION 22

1. Toyota developed the Scion line of autos for a young driver's market and Johnson and Johnson focused on the adult market for "baby" products. These are examples of:

   	1.	Integrating the markets
   	2.	Targeting the markets
   	3.	Empirically managing the markets
   	4.	Converting the markets

1 points   

QUESTION 23

1. Differentiating a market helps businesses for all but one of the reasons below:

   	1.	Differentiating the markets offers the consumer more opportunities to be "delighted"
   	2.	Differentiating allows companies to reposition products to higher-value market segments
   	3.	Companies that differentiate products end up with lower overall share of the market

1 points   

QUESTION 24

1. As discussed in class, Singapore Airlines differentiated its product by:

   	1.	Using auctions to price and sell international tickets
   	2.	Offering superior passenger service compared to what other airlines provided
   	3.	Providing lowest cost airline services
   	4.	Promoting tourism to Singapore with cut rate hotels and inexpensive flights

1 points   

QUESTION 25

1. As discussed in class, Fresh Direct's marketing strategy to sell and deliver groceries directly to the customer is an example of:

   	1.	Market segmentation
   	2.	Product Placement
   	3.	Channel differentiation
   	4.	Product extension

apply safeguards for threats arising from the following

1- loans and guarantees

2- fees and pricing

3- close business relationship

4- employment

4- actual & threatened litigation

Maximize p = x subject to

HINT [See Examples 1 and 2.]