A steel reaction vessel at 25 oC initially contained pure NO2 at a concentration of 2.0 x 10-4 mol/L. Some of the NO2 reacted to form N2O4 as described by the following equilibrum equation:

2NO2(g) <----------> N2O4(g)

At equilibrium, the concentration of N2O4 was found to be 6.01 x 10-6 mol/L. What is the concentration-based equilibrium constant (Kc) for this reaction at 25 oC?

I know the correct answer is 170, but I'd like to know how to get there. Thanks!

2. What is the pH of 3 mM H3PO4 solution? If you wish to adjust the pH of 1 L of that solution to 7.4, how much H+ or OH— do you need (in mmol)? At pH 7.4 what is the concentration of H2PO4 —? The pKas of H3PO4 are 2.1, 7.1 and 12.3.

Multi-part questions: Packer Fan Tours is the official tour company for the Green Bay Packers of the NFL. One of the events in the package is to sponsor a reception the night before a game for fans that is attended by 5 of the players from the team. There are 53 players on the Green Bay Packers' roster of which 22 are starters. Assume that the 6 players attending the reception this week are chosen randomly. Determine the probability of the following occurring:

a. None of the players at the reception are starters.

b. All of the players at the reception are starters.

c. Two of the players at the reception are starters.

d. Four of the players at the reception are starters.

Extensive research into the efficacy of maintaining high Vitamin D3 levels has proven that Vitamin D3 is more efficacious at preventing the Flu virus than vaccination.

What properties or responsibilities in physiology/ immunology does Vitamin D3 play?

1a) Briefly describe what happens during the three steps of DNA synthesis in E. coli. Remember to list what enzymes/proteins are needed and what their function is. How is the lagging strand different? What direction does synthesis proceed in? 15 points.

2b) The t_RNA with the incoming amino acid binds at the _____ site, and translocation occurs with the peptidyl t_RNA moving to the ____ site.

When one company (A) buys another company(B), some workers of company B are terminated. Terminated workers get severance pay. To be fair, company A fixes the severance payment to company B workers as equivalent to company A workers who were terminated in the last one year. A 36-year-old Mohammed, worked for company B for the last 10 years earning 32000 per year, was terminated with a severance pay of 5 weeks of salary. Bill smith complained that this is unfair that someone with the same credentials worked in company A received more. You are called in to settle the dispute. You are told that severance is determined by three factors; age, length of service with the company and the pay. You have randomly taken a sample of 40 employees of company A terminated last year. You recorded

Number of weeks of severance pay

Age of employee

Number of years with the company

Annual pay in 1000s

2. How much variance is not explained by the model? Test the validity of the models that X predict Y (provide hypotheses, decision, conclusion and conclusion in the business context)

An object is thrown straight up into the air. The object leaves the person’s hand with an upward velocity of magnitude 27 m/s. Assume that the object is in free fall, i.e., neglect air resistance. Draw a motion diagram and graphs (two graphs: one for vertical position vs. time, and one for vertical velocity vs. time) from the time when the object leaves the person’s hand to 5.0 seconds later. Include all the information on the graph that you can determine about the object’s motion, such as its position and velocity at 5.0 seconds. Assume that the person does not catch the object or interfere with it during the 5.0 seconds time interval.

(DETAILED EXPLANATION AND DRAWINGS/GRAPHS PLEASE)

Khan Academy (2019) Measures of Central Tendency and Khan Academy (2019) Measures of Dispersion what is the difference between and common?

A hockey stick exerts a horizontal force of magnitude 3.0 N on a 0.25-kg puck. While under the influence of the stick's force (and possibly some other forces), the puck moves 2.0 m. a) Is it possible that the stick does 6.0 J of work on the puck? If so, what is the angle between the stick's force and the puck's displacement while the force acts? b) Is it possible that the stick does - 3.0 J of work on the puck? If so, what is the angle between the stick's force and the puck's displacement? c) Is it possible that the stick does -6.0 J of work on the puck? If so, what is the angle between the stick's force and the puck's displacement? d) Is it possible that the stick does 6.0 J of work on the puck? If so, what is the angle between the stick's force and the puck's displacement? e) If the puck possesses an initial speed of 4.0 m/s, and then 4.0 J of work is done on the puck, find its final speed. Ignore friction. f) If the puck possesses an initial speed of 4.0 m/s, and then -2.0 J of work is done on the puck, find its final speed. Ignore friction.

Place the following energy states in order of their least net carbon dixide emission into the atmosphere, where 1. = lowest net carbon, and 5. = highest net carbon.

In your calculation, take into account:

1. How much carbon dioxide (or CO2 equivalent) is emitted per unit energy generated.
2. If the source is renewable, how much carbon dixide (or CO2 equivalent) is removed from the atmosphere each year by that resource.
3. How much energy is needed to produce and deliver that energy source.

Oils. Petroleum fractions, plant oils, and similar viscous substances, ccommonly combined with lighter distillates to form diesel fuels for truck and rail engines.   

Gaseous. Hydrocarbons, hydrogen and carbon monoxide mixtures present in gaseous state at room temperatures which, when combined with oxygen (burned) release heat and/or light.   

Solid fuels. Fossil carbonates (coals and peat), carbonized woody materials (coke, charcoals, and biochars), and lignite (woody) fuels including wood, pelletized grasses, etc. burned directly in their solid state.  

Distillates. Highly flammable liquids (liquid at room temperature) distilled from petroleum (gasoline), fermented plant starches (ethanol) and plant oils ("green" kerosene), used in both turbine (jet) and internal combustion engines.

Discuss two key components of adolescent egocentrism according to David Elkind.

Briefly describe the two stages of preoperational thought. Provide an example of children's thinking at each stage.

Can you add code to this so that it finishes the combine function. Given two words as input, the output of the program should be the two words combined together with a space between them. Not allowed to use any external libraries for this assignment.

#include <stdio.h>
#include <stdlib.h>
void combine(char* p, char* q){
/* Add the necesary logic here to combine the strings
in the dynamic array p and q by inserting a space
between two words
and write the result back to p */

  
}
int main(){
/* No changes should be done in this part */
char* word1 = malloc(sizeof(char) * 128);
char* word2 = malloc(sizeof(char) * 128);
printf("Enter your first word:\t");
scanf("%s", word1);
printf("Enter your second word:\t");
scanf("%s", word2);
combine(word1, word2);
printf("%s\n", word1);

}

Explain that metaphor:

A Surplus is like Profit.

1An agronomist was interested in finding out the amount of potassium in corn leaves, not including the stems, after four different fertilizers had been used in a field of corn

A. If 5 plots of corn were used per fertilizer in a completely randomized manner, show the layout of an experiment.

B. If in the 5 plots per fertilizer, 2 stalks of corn per plot were to be sampled from the experimental area, show the Anova table and state the assumptions necessary to test the effects of fertilizer.

C. Comment on this design (in part(B)) and analysis.

* part A, B & C please with as much detail as possible

Problem 4-34 Multiple Products, Break-Even Analysis, Operating Leverage Carlyle Lighting Products produces two different types of lamps: a floor lamp and a desk lamp. Floor lamps sell for $30, and desk lamps sell for $20. The projected income statement for the coming year follows: Check figures: 2. $277,778 4. Break-even revenue = $294,118 OBJECTIVE 0 0 Sales Less: Variable costs Contribution margin Less: Fixed costs Operatingincome $600 ,000 400,000 200,000 150,000 $ 50,000 The owner of Carlyle estimates that 60 percent of the sales revenues will be produced by floor lamps and the remaining 40 percent by desk lamps. Floor lamps are also responsible for 60 per- cent of the variable expenses. Of the fixed expenses, one-third are common to both products, and one-half are directly traceable to the floor lamp product line. Required: I. Compute the sales revenue that must be earned for Carlyle to break even. 2. Compute the number of floor lamps and desk lamps that must be sold for Carlyle to break even . 3. Compute the degree of operating leverage for Carlyle Lighting Products. Now assume that the actual revenues will be 40 percent higher than the projected revenues. By what percentage will profits increase with this change in sales volume? 4. CONCEPTUAL CONNECTION What is the theory behind the operating leverage concept?