Suppose a photon excites an electron such that the electron is removed from a bonding orbital and placed in an antibonding orbital. How does the bond order change for this molecule?

Select one:

a. increases by 0.5

b. increases by 1.0

c. decreases by 0.5

d. decreases by 1.0

Show calculations AND explain how to prepare 275 mL of 1.0 M NaCl from solid sodium chloride. and Show calculations AND explain how to prepare 275 mL of 1.0 M NaCl from a 5.0 M stock solution of sodium chloride

A) Suppose the probability that a mosquito dies when subjected to a 1 unit of insecticide is 0.7, and the probability that a fly dies when subjected to the same dose of insecticide is 0.5.   Assuming independence, what is the probability that both the fly and mosquito die when subjected to 1 unit of insecticide

B) Suppose A and B are events where the probability that B occurs is 0.3, and the probability that both A and B occur is 0.18. The conditional probability of A, given B, is

C) Suppose A and B are independent events, each occurring with probability 0.3 What is the probability that A does not occur and B does not occur?

D) Suppose A and B are disjoint events where A has probability 0.5 and B has probability 0.4. The probability that A or B occurs is

E) Suppose A and B are events where the conditional probability of A, given B, is 0.9, and the probability of B is 0.3. The probability that A and B both occur is

1f. Compare 1a and 1d, and 1b and 1e, explain why the percentage in 1a is much larger than that in 1d and why the value in 1b is much smaller than that in 1e?

1. Suppose that for Edwardsville High School, distances between students’ homes and the high school observe normal distribution with the average distance being 4.76 miles and the standard deviation being 1.74 miles. Express distances and z scores to two decimal places. Write the formula to be used before each calculation.

1a. What percentage of students in the high school live farther than 6.78 miles from the school?

1b. A survey shows that 8% of the students who live closest to the school choose to walk to school. What is the maximum walking distance of these 8% of students? In other words, what is the distance below which these 8% of students live from the school?

1c. Suppose that the school district’s policy allows students living beyond 4.50 miles from the school to take school buses to go to school. There are 3,567 students who enroll in the fall semester, 2006. How many students in the high school are not eligible to take school buses?

1d. Suppose all samples of size 12 are taken. What percentage of sample means has a value larger than 6.78 miles?

1e. Below what value are 8% of sample means of size 12?

Computers in some vehicles calculate various quantities related to performance. One of these is the fuel efficiency, or gas mileage, usually expressed as miles per gallon (mpg). For one vehicle equipped in this way, the miles per gallon were recorded each time the gas tank was filled, and the computer was then reset. In addition to the computer calculating miles per gallon, the driver also recorded the miles per gallon by dividing the miles driven by the number of gallons at fill-up. The driver wants to determine if these calculations are different.

(b) Carry out the test. (Round your answer for t to four decimal places.)
t =?

(c) Give the degrees of freedom.

(d) Give the P-value. (Round your answer to four decimal places.)

Using JAVA:

This assignment is about aggregation and class collaboration.

You will create several Classes that will be part of an overall class named InstrumentDisplay. The classes are FuelGage, Odometer, MilesSinceLastGas, and CruisingRange.

The FuelGage should assume a 15 gallon tank of gasoline and an average consumption of 1 gallon every 28 miles. It should increment in 1 gallon steps when you "add gas to the tank". It should decrement by 1 every 28 miles. It should display its current value.

You should also have a display that shows how many miles traveled since you last added gasoline, MilesSinceLastGas, and a display for the estimated number of miles until you run out of gasoline, the CruisingRange.

The Odometer should keep track of total mileage from 0 to 999,999. After that it turns over back to 0. Make sure your code allows for this rollover.

The overall class is to be named InstrumentDisplay. You may create the various outputs using System.out or JOptionPane. Make sure that account for both filling and emptying the tank. While your odometer will display in 1 mile increments, you should keep track of mileage internally in one tenth of a mile increments for purposes of computing gasoline remaining in the FuelGage and miles in the CruisingRange

Please make sure you comment your code thoroughly.

The code should be nicely formatted and should use proper variables.

A frequency distribution has a mean of 200 and a standard deviation of 20. The class limits for one class are 220 up to 240. What is the area associated with the class? Select one: a. -2.0 and -1.0 b. 1.0 and 2.0 c. 0.8185 d. 0.4772 e. 0.1359