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1.The cost of renting a car is $46 /wk plus $0.25 /mi traveled during that week. An equation ...

esent the cost would be y=46+0.25x , where x is the number of miles traveled. a. What is your cost if you travel 59 mi? The cost is $ 43.26 . b. If your cost was $66.25 , how many miles were you charged for traveling? You were charged for traveling 66.51 miles. c. Suppose you have a maximum of $100 to spend for the car rental. What would be the maximum number of miles you could travel? The maximum number of miles you could travel is Number
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2.CSE 1300 Problem Solving Practice Conditional Statements Question 1: Student Fees All KSU students pay fees in addition to their tuition. Using the code ...

nts pay fees in addition to their tuition. Using the code provided below as a starting point, write a conditional statement that determines how much a student will pay in fees. • Students registered for 1 – 4 hours pay $843 in student fees. • Students enrolled in 5 or more hours pay $993 in student fees. The program should also display a message to students who have not enrolled in any classes: “You are not enrolled in any classes right now.” NOTE: You must use the variables included in the code snippet get credit for this question. import java.util.Scanner; class Main { public static void main(String[] args) { int creditHours; int fees = 0; Scanner myScanner = new Scanner(System.in); System.out.print("Please enter the number of credit hours you are taking this term: "); creditHours = myScanner.nextInt(); myScanner.close(); //YOUR CODE GOES HERE } } Break the Problem Down Answer the following questions, then use the information to write your code. What are the inputs in the pseudocode above? (INPUT) What are we storing in the pseudocode above? (MEMORY) What calculations are needed? (PROCESSES) What needs to be displayed to the user? (OUTPUT) How many conditions are there in your problem statement? What are they? Does something need to happen if the condition(s) are not met? What type of conditional statement do you need? Solution in Java Problem 2: Block Tuition The cost of KSU’s tuition is determined by the number of credit hours a student enrolls in. Using the chart below, write a conditional statement (ONLY) that sets the value of a tuition variable to what that student will owe. NOTE: For this problem you can assume that all students are enrolled in a minimum of 12 hours. Number of Credit Hours 12 13 14 15 or more Cost (in USD) $2224 $2410 $2595 $2718 Break the Problem Down Answer the following questions, then use the information to write your code. What do we need to store? (MEMORY) What are the inputs in the problem statement above? (INPUT) What calculations are needed? (PROCESSES) What needs to be displayed to the user? (OUTPUT) How many conditions are there in your problem statement? What are they? Does something need to happen if the condition(s) are not met? What type of conditional statement do you need? Solution in Java Problem 3: Class Standing Undergraduate students will be classified based on the number of earned institutional hours. • Freshman: • Sophomore: • Junior: • Senior: 0 - 29 hours 30 - 59 hours 60 - 89 hours 90 hours or more Write a complete program that prompts the user for the number of credit hours they have completed. Write a conditional statement that prints out their class standing based on the information they provided. Sample Output Break the Problem Down Answer the following questions, then use the information to write your code. What do we need to store? (MEMORY) Please enter the number of credit hours you have earned: 29 You are a freshman. What are the inputs in the problem statement above? (INPUT) What calculations are needed? (PROCESSES) What needs to be displayed to the user? (OUTPUT) How many conditions are there in your problem statement? What are they? Does something need to happen if the condition(s) are not met? What type of conditional statement do you need? Solution in Java Problem 4: Maximum Course Load KSU’s policy on maximum course loads during the academic year is as follows: A student in good standing may register for up to 18 hours. The Registrar may approve up to 21 hours for students with an institutional GPA of 3.5 or higher. Students Write a complete program that prompts the user for the number of credit hours they have signed up for. Write the necessary conditional statement(s) to address the stipulations in KSU’s policy. Once the maximum number of hours is determined, display a message to the user that states “You may enroll in X credit hours this semester.” where X is the number of credit hours determined by your program. Sample Output Break the Problem Down Answer the following questions, then use the information to write your code. What do we need to store? (MEMORY) Please enter your GPA: 3.75 You may enroll in up to 21 credit hours this semester. What are the inputs in the problem statement above? (INPUT) What calculations are needed? (PROCESSES) What needs to be displayed to the user? (OUTPUT) How many conditions are there in your problem statement? What are they? Does something need to happen if the condition(s) are not met? What type of conditional statement do you need? Solution in Java Problem 5: First-Year Seminar All first-year full-time students entering Kennesaw State University with fewer than 15 semester hours are required to complete a First-Year Seminar. Students with 30 or more credit hours are not eligible to enroll in a First-Year Seminar. Write a complete program that prompts the user for the number of credit hours they have completed. Write the necessary conditional statement(s) to address the stipulations in KSU’s policy. When you run your program, it should display one of the following messages to the screen: • You must enroll in First-Year Seminar. • You do not have to take First-Year Seminar. • You are not eligible for First-Year Seminar. Sample Output Break the Problem Down Answer the following questions, then use the information to write your code. What do we need to store? (MEMORY) Enter the number of credit hours have you completed: 30 You are not eligible for First-Year Seminar. What are the inputs in the problem statement above? (INPUT) What calculations are needed? (PROCESSES) What needs to be displayed to the user? (OUTPUT) How many conditions are there in your problem statement? What are they? Does something need to happen if the condition(s) are not met? What type of conditional statement do you need? Solution in Java
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3.consider the titration of 197 ml of .935 M acetic acid, ch3cooh, ka=1.8 x 10^-5 with 1.521 M koh for ...

the next three problems. What is the pH of the solution when 73.87 mL of the 1.521 M KOH are added to the .935 M acetic acid solution? What is the pH of the solution at the equivalence point? What is the pH of the solution when 153.8 mL of the 1.521 M KOH has been added to the .935 M acetic acid solution?
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5.24) At 25 oC, what is the pOH of a 2.50 x 10–3 M aqueous HCl solution? 25) How many mLs ...

an aqueous 0.1125 M NaOH solution will it take to titrate 25.00 mL of an aqueous 0.05256 M H2SO4 solution to equivalence (25 oC)?
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6.3A(g) + X(g) → Z(g) ΔH° = -480 kJ/molrxn The equation shown above represents an exothermic reaction between A(g) ...

reaction between A(g) and X(g). What is the amount of heat released when 10 mol of A(g) reacts with an excess X(g) ? ΔH A -236kJ X -136kJ Y -167kJ Using the heats of formation found in the table above, calculate ΔH for the reaction below. 6A(aq) + 7X(g) → 6Y(l) Y + 2X → 4Z ΔH=-4 A + 3B → 2Z ΔH=-2 A → X +C ΔH=7 Using the thermodynamic data above, determine ΔH for the reaction below. 2C+ 6B → Y When 0.3 moles of A(s) (4 grams) is dissolved in 12 grams of water at 23°C, the temperature of the water increases to 31°C. The specific heat of water is 4.18 J/g°C. Calculate ΔH in kJ/mol. Report your answer to 1 decimal place.
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7.A force of 40.0 N is needed to compress a spring 0.200 m. A 1.00 x 10-2 kg ball ...

ring. a) Calculate the work done to compress the spring. (2 marks) b) What happens to the work done on the spring ? (1 mark) c) If the spring is released, what happens to the energy of the spring? (1 mark) d) Calculate the total mechanical energy of the ball at the instant it leaves the spring. (2 marks) e) What will be the speed of the ball at the instant it leaves the spring? (2 marks) f) If the ball is fired up into the air by the spring, how much gravitational potential energy will it gain? (1 mark) g) What will be the maximum height of the ball? (2 marks
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8.AP Chem AB FRQ Question 1 A sample consisting of 50. mL of 0.400 M solution of the acid, HClO4, is titrated ...

titrated with a 0.200 M solution of the base, LiOH. Write the balanced chemical reaction for neutralization reaction: HClO4 (aq) + LiOH (aq) → LiClO4 (aq) + H2O (l) Write the NET ionic equation for the neutralization reaction. OH⁻ (aq) + H⁺ (aq) → H2O (l) Compute the pH of the titration solution. Show your work i) before any of the base is added ii) after 25. mL of base is added iii) after 50. mL of base is added A student performs the titration with the same chemicals but with smaller volumes of each chemical . Which of the following titration curves could represent the titration. Explain A because this entails a strong acid and a strong base. Question 2 A student performs a titration of an unknown acid with a strong base and gets the following titration curve: a) The student consults the list of pKa of acids shown below. If the acid is listed in the table below, which is the most likely identity of the unknown acid? Explain. Acid Ka HF 7.2 x 10-4 CH3COOH 1.8 x 10-5 H2CO3 4.3 x 10-7 HBrO 2.0 x 10-9 The unknown acid is HBrO because the calculated Ka is in between 50^-4 and 50^-6 and 2.0 x 10^-9 lies in between them. b) What is the initial molarity of the acid? 10^-3 = 0.001M Question 3 a) Describe the components and the composition of an effective buffer solution. Explain how the components of the buffer allow the buffer to maintain its pH. An effective buffer solution has a weak acid and its conjugate base or a weak base and its conjugate acid. A buffer solution is most effective when the ratio of its component concentrations is close to 1, also when the pH is equal to the pka of the acid.; The components of the buffer allow the buffer to maintain its pH because buffers can absorb excess H+ions or OH– ions. An employer is interviewing four applicants for a job as a laboratory technician and asks each how to prepare a buffer solution with a pH of 5.0. The following constants may be helpful: hydrazoic acid, pKa = 4.74 Boric acid, pKa = 9.23 Archita A. says she would mix equal molar solutions of hydrazoic (HN3) and sodium azide (NaN3) solutions. Bradley B. says she would mix equimolar Boric acid (H3BO3) and HCl solutions. Carlos C. says he would mix equimolar Boric Acid (H3BO3) and sodium dihydrogen borate (NaH2BO3) solutions. Delia D. says he would mix equimolar hydrazoic Acid (HN3) and NaOH solutions. b) Which of these applicants has given an appropriate procedure? Explain your answer Delia because she is using Sodium hydroxide which results in a pH of 5. NaOH is a strong base and in order to have an effective buffer a weak acid must be incorporated which is the HN3. c) Explain what is wrong with the erroneous procedures. The rest all incorporate a strong acid and a strong base or a weak acid and a weak base which don’ result in an effective buffer. d) The applicants have access to the 1 Liter volumes of each of the solutions listed above. They have access to graduated cylinders. In order to make 1.0 Liter of the correct 5.0 buffer solution, what volumes of the two chemicals must be mixed?
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