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1.(a) A 20.0 L container at 303 K holds a mixture of two gases with a total pressure of 5.00 ...

here are 2.00 mol of Gas A in the mixture, how many moles of Gas B are present? (R = 0.0821 L • atm/(K • mol))
(b) The gas in a 250. mL piston experiences a change in pressure from 1.00 atm to 2.80 atm. What is the new volume (in mL) assuming the moles of gas and temperature are held constant?
(c) Small quantities of Oxygen can be produced by the decomposition of mercury(II) oxide as shown below. Typically, the oxygen gas is bubbled through water for collection and becomes saturated with water vapor. Atomic weight of HgO = 216.6 amu, Atomic weight of Oxygen = 32.00 amu)
2 HgO(s) → 2 Hg(ℓ) + O₂(g)
(i) Assuming that 3.05 grams of HgO was used in this reaction, determine the number of moles of oxygen gas formed.(According to the above chemical equation)
(ii) Assuming 310. 0 mL of Oxygen gas was collected at at 29°C, calculate the pressure of the Oxygen gas that was collected. (R = 0.0821 L • atm/(K • mol)
(iii) If the vapor pressure of water at this temperature equals to 0.042 atm, calculate the pressure reading of this experiment.

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hin a free demo session as I have my answers, but just want to confirm them, that would be greatly appreciated.
Question 1:
A block of mass M = 0.10 kg is attached to one end of a spring with spring constant k = 100 N/m . The other end of the spring is attached to a fixed wall. The block is pushed against the spring, compressing it a distance x = 0.04 m . The block is then released from rest, and the block-spring system travels along a horizontal, rough track. Data collected from a motion detector are used to create a graph of the kinetic energy K and spring potential energy Us of the system as a function of the block's position as the spring expands. How can the student determine the amount of mechanical energy dissipated by friction as the spring expanded to its natural spring length?
Question 2:
The Atwood’s machine shown consists of two blocks connected by a light string that passes over a pulley of negligible mass and negligible friction. The blocks are released from rest, and m2 is greater than m1. Assume that the reference line of zero gravitational potential energy is the floor. Which of the following best represents the total gravitational potential energy U and total kinetic energy K of the block-block-Earth system as a function of the height h of block m1?
Question 3:
A 2 kg block is placed at the top of an incline and released from rest near Earth’s surface and unknown distance H above the ground. The angle θ between the ground and the incline is also unknown. Frictional forces between the block and the incline are considered to be negligible. The block eventually slides to the bottom of the incline after 0.75 s. The block’s velocity v as a function of time t is shown in the graph starting from the instant it is released. How could a student use the graph to determine the total energy of the block-Earth system?
Question 4:
A block slides across a flat, horizontal surface to the right. For each choice, the arrows represent velocity vectors of the block at successive intervals of time. Which of the following diagrams represents the situation in which the block loses kinetic energy?

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function
C = 65t + 30
where t is the time in months.
(a) Calculate the gym membership cost over a six month period.
(b) Sketch the graph of the function C = 65t + 30 for t ≥ 0.
(c) Calculate the time, t, in months, when the total cost reaches 290 AUD.
In the neighbouring Nicolo’s Gym, the initial payment is 75 AUD higher than in
Paolo’s Gym, however the monthly fee is lower at 30 AUD per month.
(d) Determine the number of months it takes for the total cost to be less by
attending Nicolo’s Gym in comparison to Paolo’s Gym.

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boxes and large boxes. The volume of each small box is 6 cubic feet and the volume of each large box is 12 cubic feet. There were twice as many small boxes shipped as large boxes shipped and the total volume of all boxes was 168 cubic feet. Write a system of equations that could be used to determine the number of small boxes shipped and the number of large boxes shipped. Define the variables that you use to write the system.

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5.1. A ball is thrown with an initial speed of 20 m/s at an angle of 60° to the ground. ...

ance is negligible, what is the ball’s speed at the instant it reaches its maximum height from the ground?
A. - 20 m/s
B. 0 m/s
C. + 17.3 m/s
D. + 10 m/s
E. + 20 m/s
2. A rhino charges full speed at a car with an initial velocity of 15 m/s. When the rhino collides with the car, it crumples in by 1 m before the rhino comes to a complete stop. What acceleration did the rhino feel as it came to a stop?
A. - 112.5 m/s^2
B. - 7.5 m/s^2
C. - 30 m/s^2
D. + 112.5 m/s^2
E. + 30 m/s^2
F. + 7.5 m/s^2
3. Two students want to determine the speed at which a ball is released when thrown vertically upward into the air. One student throws the ball into the air while the other student measures the total time that the ball is in the air. The students use a meterstick to measure the release height of the ball. Which of the following equations should the students use to determine the speed at which the ball was released? *
A. Use y final = y initial+ v initial *t + (1/2)*a*t^2 from the moment in time in which the ball was released to the moment in time in which the ball reaches its highest point.
B. v final^2 = v initial ^2 + 2a(????y) from the moment in time in which the ball was released to the moment in time in which the ball hits the ground.
C. Use y final = y initial+ v initial *t + (1/2)*a*t^2 from the moment in time in which the ball was released to the moment in time in which the ball hits the ground.
D. v final^2 = v initial ^2 + 2a(????y) from the moment in time in which the ball was released to the moment in time in which the ball reaches its highest point.

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ll have 110 seats. The final row will have 890 seats. The team’s current arena charges: $6000 for a season seat in rows 1-10, $4000 for a season seat in rows 11-20, $3000 for a season seat in rows 21-30, $2000 for a season seat in rows 31-40. The team has suggested modifying their current plan to use a geometric sequence, and decrease the price for a seat in each subsequent row by the same factor based on the price of a seat in the row in front of it. Determine a reasonable price for a season ticket in the first row

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7. Moussa has change in his pocket at the end of the day, he puts the loonies and toonies into ...

jar in his room. He currently has 45 coins
Determine a total value for the coins. Ask a question about the coins to create a problem to solve.

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delines must follow.
The purpose of this assignment is to give you practice using structs, using strings, writing functions and sorting. You will read a student file into an array of structs, determine grades, sort the array and print it out.
Program Steps and Requirements
Use the Student struct shown below.
Read the input file (partially shown below) and store the data in an array of structs. The input file contains 55 student records and one heading line.
Write code to determine the grade for each student. The grade determination is exactly as specified for this class in the syllabus. Remember to discard the lowest assignment grade.
Sort the array of student students in descending order by the total points.
Write the output file using the exact format shown below and include the two lines of headings in the output.
Required Student struct and named constants
const unsigned NumberOfStudents = 55;
const unsigned PointsPossible = 400;
const unsigned NumberOfAssignments = 10;
const unsigned NumberOfExercises = 10;
struct Student
{
int id;
string name;
int exercise[NumberOfExercises];
int assignment[NumberOfAssignments];
int midterm;
int final;
int codelab;
int exerciseTotal;
int assignmentTotal;
int totalPoints;
int percent;
string grade;
};
Input file
-StudId- -------Name-------- -----Exercises----- ---------Assignments--------- Mi Fin CL
12345678 Smartiepants, Sam 5 4 5 4 5 5 5 5 5 5 20 19 20 20 20 20 19 20 20 19 65 98 9
18519268 Mendoza, Victor 4 2 5 4 1 4 5 5 5 4 17 12 17 18 14 17 19 18 14 18 59 49 6
23276929 Chien, Shengfeng 2 3 0 4 4 5 2 5 5 2 9 18 15 8 19 18 18 16 19 13 64 89 8
18242679 Dhaliwal, Shawn 5 5 3 4 5 4 2 4 4 5 9 18 17 15 18 19 12 15 18 14 45 92 9
09869966 Miraftab, Mina 5 3 5 5 3 5 4 0 4 3 17 4 3 18 12 16 14 17 17 12 52 68 7
10930997 Dimas, Abraham 5 3 4 5 4 3 4 3 3 3 12 18 20 11 14 7 15 10 18 15 64 89 6
11545560 Masongsong, Mikhael 1 3 5 4 3 4 5 3 5 5 19 19 9 13 17 20 20 14 14 19 64 96 8
10626377 Zigler, Joshua 4 3 4 3 2 5 4 4 4 5 17 14 18 20 17 18 12 19 14 14 51 90 5
...
Output report file
Stud Id Name Ex Ass Mi Fin CL Tot Pct Gr
-------- ------------------- -- --- -- --- -- --- --- --
12345678 Smartiepants, Sam 48 178 65 98 9 398 100 A+
11545560 Masongsong, Mikhael 38 155 64 96 8 361 90 A-
20767544 Martins, Gustavo 40 144 67 97 10 358 90 A-
23305464 Zumwalt, Jacob 37 160 62 90 8 357 89 B+
23579439 Feirstein, Berent 42 159 55 91 9 356 89 B+
14965959 Ho, Brandon 40 157 66 84 8 355 89 B+
19988142 Wang, Lu 31 157 58 98 9 353 88 B+
09559062 Mora, Gabriel 36 137 67 100 7 347 87 B
19108176 Bailey, Tanequa 44 152 56 85 8 345 86 B
Suggested main function
int main()
{
Student students[NumberOfStudents];
getStudentDataFromFile(students, InputFilename);
determineGrades(students);
sort(students);
printStudentDataToFile(students,OutputFilename);
}

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vertical strut extending from the lower arch to the roadway (as shown in the image). Here the lower arch is 80m above sea level and the upper arch is 49m above the roadway. At the vertices, the lower arch is 118m above sea level and the upper arch is 73m above the roadway.
Find the quadratic equations which describe the parabolas of the lower arch in:
vertex form, y=a(x-h)^2+k;
intercept form, y=a(x-α)(x-β)
general form, y=ax^2+bx+c
The lower arch intersects the roadway 181.5m from the vertex. Calculate how much higher is the upper arch than the lower at the middle of the bridge?
Using technology, determine the total length of all 19 pairs of equally-spaced, vertical struts between the lower arch and the roadway.

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d are linked to a higher risk of developing coronary heart diseases. A researcher is investigating two types of interventions (e.g. A, B) to reduce the cholesterol level. Study participants were randomized to receive either intervention A or B. Some subjects dropped from the study due to reasons not related to the interventions. In order to determine which intervention was more effective, the mean cholesterol concentrations were compared between the two groups at the end of the study. The total cholesterol levels for the patients undergoing the intervention A were: 240, 238, 245, 256, 289, 190, 189, 205, 200, 214, 237, 247, 254, 209, 211, 200 mg/dl. The total cholesterol levels for the patients undergoing the intervention B were: 213, 188, 199, 247, 248, 239, 256, 244, 206, 223, 241, 261, 226, and 231 mg/dl.
Which intervention was more effective? Consider alpha=0.05.
Intervention B was more effective.
Intervention A was more effective.
Impossible to tell based on the information provided.
The two interventions were not statistically significant different.

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11.what group of organisms will determine the total number of organisms that can live in a given area?

12.Kyle is working on a glass mosaic in art class and is only using rectangular pieces in the project. ...

For each piece of glass, Kyle wants the width to length ratio to be 114 inches : 212 inches. Calculate the unit rate of the pieces and use that information to determine which of the following statements are true. Select TWO that apply.
Kyle has a piece of glass that has a length of 412 inches. In order to fit in his mosaic, it must have a width of 9 inches.
Kyle has a piece of glass with a width of 312 inches. Since it has a length of 6 inches, Kyle did not use it in his mosaic.
Kyle wants the total length of his mosaic to be 2 feet. This will make the width of his mosaic 1 foot.
Kyle has one piece in the mosaic with the dimensions of 134 inches long by 312 inches wide.

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or 48 months with an APR of 4.5%. Assuming she makes monthly payments, determine the total interest Christina pays over the life of the loan. Round your answer to the nearest cent, if necessary.

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is a multiple of three or greater than eight.
A certain game consist of rolling a single fair die and pays off as follows nine dollars for a six, six dollars for a five, one dollar for four and no payoffs otherwise.Find the expected winnings for this game.
A fair die is rolled four times. A 6 is considered success While all other outcomes are failures find the probability of three successes.
A pet store has nine puppies including 4 poodles 3 terriers and 2 retrievers. If Rebecca an errand in that order each select one puppy at random without replacement find the probability that Aaron select a retriever given that from last Rebecca selects a poodle.
Experience shows that a ski lodge will be for (166 guests) if there is a heavy snowfall in December, well only partially full (52 guests) With a light snowfall. What is the expected number of guests if the probability for a heavy snowfall is 0.40? I assume that heavy snowfall and light snowfall are the only two possibilities.
A pet store has six puppies Including two poodles two Terriers and to retrievers. If Rebecca and Aaron in that order each select one puppy random with replacement (They both may select the same one) Find the probability That Rebecca selects a terrier and Aaron selects a retriever.
Three married couples arrange themselves randomly in six consecutive seats in a row. Determine (A) the number of ways the following event can occur, And (B) the probability of the event. (The denominator of the probability fraction will be 6!=720, The total number of ways to arrange six items ). Each man was that immediately to the right of his wife.
A coin is tossed five times. Find the probability that all our heads. Find the probability that at least three are heads.
A certain prescription drug is known to produce undesirable facts and 35% of all patients due to drug. Among a random sample of a patient using a drug find the probability of the stated event. Exactly 5 have undesired effects.
10,000 raffle tickets are sold. One first prize of 1600, for second prizes of 800 each, And 9/3 prizes of 300 each or to be awarded with all winners selected randomly. If you purchase one ticket what are your expected winnings.
Suppose a charitable organization decides to Raise money by raffling A trip worth 500. If 3000 tickets are sold at one dollar each find the expected net winnings for a person who buys one ticket. Round to the nearest cent
Three men and seven women are waiting to be interviewed for jobs. If they are selected in random order find the probability that all men will be interviewed first
A fair diet is rolled. What is the probability of rolling on our number or a number less than three.
The pet store has 15 puppies, including five poodles, five Terriers, and five retrievers. If Rebecca and Aaron, in that order, select one puppy at random without replacement, find the probability that both select a poodle
Beth is taking a nine question multiple-choice test for which each question Has three answer choices, only one of which is correct. Beth decides on answering By rolling a fair die And making the first answer choice if the die shows one or two, The second If the die shows three or four, and the third if the die shows five or six. Find the probability of the stated event. Exactly 6 correct answers
For the experiment of drawing a single card from a standard 52 card deck find (a) the probability and (b) the odds are in favor that they do not drive six

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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

mathematicsalgebra Physics