Q1. Name 5 factors which can affect the rate of a reaction?

Q2. Which of the following statements is false?[1] The minimum amount of energy needed for a reaction to occur is called the activation energy. [2] The rate of a reaction depends on the magnitude of the activation energy. [3] A catalyst increases the rate constant in a reaction. [4] The frequency of collisions is ultimately the only factor which affects the rate of a reaction. [5] None of the above.

Q3. Which of the following will not affect the position of a chemical equilibrium?[1] Changing the temperature[2] Adding a catalyst[3] Changing the volume[4] Changing the concentration of the products[5] None of the above

Q4. Consider the following exothermic reaction: N2 (g) + 3H2 (g) ⇆ 2NH3 (g).For this reaction, answer questions below.

a). What will happen to the reaction mixture at equilibrium if some more N2 (g) is added?
b). What will happen to the reaction mixture at equilibrium if the temperature is decreased?
c). What will happen to the reaction mixture at equilibrium if some helium gas is added?
d). What will happen to the reaction mixture at equilibrium if the volume of the container is increased?
e). What will happen to the reaction mixture at equilibrium if the pressure is increased?

Q5.Which substance can be classified as a Lewis base?[1] HCl,[2] BF3,[3] Ca2+,[4] HF, [5] NH3

Q6. Which of the following is a conjugate acid-base pair?[1] F- and NaF, [2] H2SO4 and HSO4-, [3] PH3 and PF3,[4] Br2 and Br-, [5] HCl and HClO4

Q7. Which of the following will give an acidic mixture?
[1] Mixing equal volumes of 1.0 M HCl and 1.0 M KOH
[2] Mixing 2.0 L of 1.0 M H2SO4 with 4.0 L of 1.0 M KOH
[3] Mixing equal volumes of 1.0 M KOH and water
[4] Mixing 1.0 L of 1.0 M HCl with 2.0 L of 1.0 M KOH
[5] Mixing equal volumes of 1.0 M H3PO4 and 1.0 M NaOH

Q8.Which of the following is the strongest acid?[1] HNO3, [2] HF, [3] H2S, [4] CH3COOH
[5] HPO42

Q9, Which of the following is a salt? [1] KOH, [2] HBr, [3] BF3, [4] NH3, [5] NaBr

Q10. As the hydrogen ion concentration of an aqueous solution increases, what will happen to the hydroxide ion concentration?

The Toyota Camry is one of the best-selling cars in North America. The cost of a previously owned Camry depends on many factors, including the model year, mileage, and condition. To investigate the relationship between the car’s mileage and the sales price for Camrys, the following data show the mileage and sale price for 19 sales (PriceHub web site, February 24, 2012).

DATA

Miles (1,000s) Price ($1,000s) 22 16.2 29 16.0 36 13.8 47 11.5 63 12.5 77 12.9 73 11.2 87 13.0 92 11.8 101 10.8 110 8.3 28 12.5 59 11.1 68 15.0 68 12.2 91 13.0 42 15.6 65 12.7 110 8.3

(a) Choose a scatter chart below with ‘Miles (1000s)’ as the independent variable. (i) (ii) (iii) (iv) What does the scatter chart indicate about the relationship between price and miles? The scatter chart indicates there may be a linear relationship between miles and price. Since a Camry with higher miles will generally sell for a lower price, a negative relationship is expected between these two variables. This scatter chart is consistent with what is expected.

(b) Develop an estimated regression equation showing how price is related to miles. What is the estimated regression model? Let x represent the miles. If required, round your answers to four decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank. (Example: -300) = + x

(c) Test whether each of the regression parameters β0 and β1 is equal to zero at a 0.01 level of significance. What are the correct interpretations of the estimated regression parameters? Are these interpretations reasonable? The input in the box below will not be graded, but may be reviewed and considered by your instructor.

(d) How much of the variation in the sample values of price does the model estimated in part (b) explain? If required, round your answer to two decimal places. %

(e) For the model estimated in part (b), calculate the predicted price and residual for each automobile in the data. Identify the two automobiles that were the biggest bargains. If required, round your answer to the nearest whole number. The best bargain is the Camry # in the data set, which has miles, and sells for $ less than its predicted price. The second best bargain is the Camry # in the data set, which has miles, and sells for $ less than its predicted price.

(f) Suppose that you are considering purchasing a previously owned Camry that has been driven 100,000 miles. Use the estimated regression equation developed in part (b) to predict the price for this car. If required, round your answer to one decimal place. Do not round intermediate calculations. Predicted price: $ Is this the price you would offer the seller?

Explain. The input in the box below will not be graded, but may be reviewed and considered by your instructor.

2. Student pricing at the movie theater is a common example of third degree price

discrimination. What is it about students, as compared to everyone else, that makes

movie theaters want or need to charge them a lower price? Why is it important for

movie theaters to make students show their IDs? Additionally, suppose a student could

buy as many tickets as they wanted with their ID. How might that limit the theater’s

ability to charge two drastically different prices for students and non-students?

In a home theater system, the probability that the video components need repair within 1 year is 0.02, the probability that the electronic components need repair within 1 year is 0.005, and the probability that the audio components need repair within 1 year is 0.004. Assuming that the events are independent, find the following probabilities. (Round your answers to four decimal places.)

(a) At least one of these components will need repair within 1 year


(b) Exactly one of these component will need repair within 1 year

You are given the sample mean and the population standard deviation. Use this information to construct the​ 90% and​ 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If​ convenient, use technology to construct the confidence intervals. A random sample of 50 home theater systems has a mean price of ​$149.00. Assume the population standard deviation is ​$18.70.

Construct a​ 90% confidence interval for the population mean. The​ 90% confidence interval is ​( _____​, ______​). ​(Round to two decimal places as​ needed.)

Write code to ask user to provide input length in miles, yards, feet and inches and write code to convert sum of total length into meters. Display result by reiterating input values in inches, feet, yards, and miles entered by user, and the sum of the total length in meters. PLEASE use bluej for code

Create a html page to convert miles into kilometers, the page should have four buttons using FOR loop to convert values from 1-25, 25-50, 50-75, and 75-100

Upon clicking any of the four button, output should display the range miles to kilometers in table cell.

Overview

For this program, add code to program 2 that will (potentially) allow for a discount to be applied to the cost of the tickets to the movie theater.

Basic Program Logic

The program should start the same as program 2 by asking the user for the number of tickets to purchase for adult and children.

The program should then ask the user if they have a discount coupon. This is a string value. A value of "Y" indicates the user does have a coupon. Any other value indicates the user does not have a coupon.

If the user does have a discount coupon, ask if the coupon is for a free adult ticket or free child ticket. This is also a string value. A value of "A" is for a free adult ticket which means that a discount of 11.25 should be applied to total purchase. A value of "C" is for a free child ticket which means that a discount of 4.50 should be applied to the total purchase. Any other value is invalid which means that no discount should be applied to the total purchase. If an invalid discount type is selected, display a message to the user that their discount type is not valid and that no discount will be applied.

Calculate the user's total purchase amount, making sure to apply the appropriate discount amount (11.25, 4.50, or 0.00).

Finally, display the results similar to program 2: the number of adult tickets that were purchased, the number of child tickets that were purchased, the discount amount (if a discount was applied to the purchase), and the total purchase amount. The discount amount should ONLY be displayed if the user indicated they had a discount coupon. As with program 2, use setw to line up the last digit of the displayed values and setprecision to display 2 digits after the decimal point.

Program Requirements

1. At the top of the C++ source code, include a documentation box that resembles the one from programs 1 and 2.

2. The dollar amounts should all be displayed with exactly 2 digits after the decimal point, including zeros.

3. The numeric values read in from the user should all be integer values. The discount values read in from the user should all be string values. Use meaningful variable names.

4. Make sure and test the program with values other than those in the sample output.

Output

A few runs of the program should produce the following results:

Run 1

Enter the number of adult tickets that are being purchased: 2
Enter the number of child tickets that are being purchased: 5

Do you have a discount coupon (Y for yes)? Y

Is the discount for an adult or child's ticket (A for adult, C for child)? C


************************************
           Theater Sale
************************************
Number of adult tickets:           2
Number of child tickets:           5

Discount:                       4.50

Total purchase:                40.50

Run 2

Enter the number of adult tickets that are being purchased: 1
Enter the number of child tickets that are being purchased: 2

Do you have a discount coupon (Y for yes)? n


************************************
           Theater Sale
************************************
Number of adult tickets:           1
Number of child tickets:           2

Total purchase:                20.25

Run 3

Enter the number of adult tickets that are being purchased: 2
Enter the number of child tickets that are being purchased: 2

Do you have a discount coupon (Y for yes)? Y

Is the discount for an adult or child's ticket (A for adult, C for child)? S
Error: S is not a valid discount type. No discount will be applied

************************************
           Theater Sale
************************************
Number of adult tickets:           2
Number of child tickets:           2

Discount:                       0.00

Total purchase:                31.50

Run 4

Enter the number of adult tickets that are being purchased: 4
Enter the number of child tickets that are being purchased: 2

Do you have a discount coupon (Y for yes)? Y

Is the discount for an adult or child's ticket (A for adult, C for child)? A


************************************
           Theater Sale
************************************
Number of adult tickets:           4
Number of child tickets:           2

Discount:                      11.25

Total purchase:                42.75

Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. Many complain that the time devoted to previews is too long. A preliminary sample conducted by The Wall Street Journal showed that the standard deviation of the amount of time devoted to previews was four minutes. Use that as a planning value for the standard deviation in answering the following questions. a. If we want to estimate the population mean time for previews at movie theaters with a margin of error of 69 seconds, what sample size should be used? Assume 95% confidence. b. If we want to estimate the population mean time for previews at movie theaters with a margin of error of 1 minute, what sample size should be used? Assume 95% confidence.