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What is the net ionic equation of the following molecular equation k so aq hcl aq so g h o


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1.What is the net ionic equation of the following molecular equation? K2SO3 (aq) + 2HCl (aq) → SO2 (g) + H2O ...

2 (g) + H2O (l) + 2KCl (aq) Group of answer choices 2H+ (aq) + 2OH- (aq) → 2H2O (l) NR (no reaction) 2K+ (aq) + SO32- (aq) + 2H+ (aq) + 2Cl- (aq) → SO2 (g) + H2O (l) + 2KCl (s) SO32- (aq) + 2H+ (aq) → SO2 (g) + H2O (l) 2K+ (aq) + SO32- (aq) + 2H+ (aq) + 2Cl- (aq) → SO2 (g) + H2O (l) + 2K+ (aq) + 2Cl- (aq)
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2.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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3.A long, straight wire carries a current of 10 A to the right. Just 0.2 m below the wire lies ...

oop carrying a current of 2 A as shown. The wire loop forms a square with sides of length1.0 m. What is the direction of the net force on the square loop due to the long, straight wire?
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4.. When 4.00-L of 0.0290 M aluminum sulfate and 3.25-L of 0.0700 M Pb(NO3)2 solutions are mixed, solid lead (II) ...

d lead (II) sulfate precipitates (a) Write a balanced chemical equation for the reaction (b) Write the net ionic equation for the reaction (c) What type of reaction is occurring? (d) What is the limiting reagent? The excess reagent? (e) How many grams of lead (II) sulfate are formed? (f) In the lab, a chemistry student mixed the two solutions together and formed 9.40 g of lead (II) sulfate. What percent yield did the student obtain?
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5.Let's Play Ice Hockey! 9601686.png An ice hockey player uses hockey stick to apply force on a motionless puck as shown on ...

motionless puck as shown on the picture above. The net force that the stick applies on the puck is 150N and the contact lasts for 7.5 ms. The mass of the puck is 166 g. A) (1 point) Calculate the acceleration of the puck under the influence of the net force. B) (2 points) Calculate the puck's change in momentum due to the impulse applied by the hockey stick. C) (1 point) What is the velocity of the puck once it leaves the stick? Puck travels over rough ice and comes to a stop after 25 m. The force diagram below shows all forces acting on the puck during that travel. Screen Shot 2020-11-02 at 2.04.05 PM.png D) (1 point) Calculate the work done on the puck by gravitational force. E) (1 point) Calculate the work done on the puck by normal force. F) (2 points) Calculate work done by friction force on the puck. CNX_UPhysics_09_03_HockeyPuck.jpg Now stationary, the puck (red) collides with a blue puck of the mass .332 kg moving to the left with velocity of 2.5 m/s. If collision is perfectly elastic calculate: H) (2 points) Total momentum of blue+red puck system before collision? I) (1 point) What is the total momentum of blue+red puck system after collision? How do you know? J) (2 points) What is the velocity of the blue puck after collision?
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6.Company A has the current income statement below. Remember to show all your calculations for each question. Assuming a projected ...

estion. Assuming a projected increase in sales of 12% annually, a gross profit margin this year of 19.23%, an operating profit margin this year of 16.31% and a called dividend each year of 16% of after tax earnings, 23.U0 P Flag question Finish attem Time left 2:2 (1) complete the income statement below; (3 points) (2) prepare two subsequent years of pro formas; (6 points) (3) what is the gross profit margin for year 2? (1 point) (4) what is the operating profit margin for year 2? (1 points) (5) what is the gross profit margin for year 3? (1 point) (6) what is the operating profit margin for year 3? (1 point) (7) what is the compound annual growth rate of dividends from year 1 to year 3? (3 points) (8) What is the growth rate of the company's after tax earnings from year 1 to 3? (3 points) (9) If the company too 45% of this year's net profits after taxes and invested in a new line of business with anticipated cash flows of $60,000, $65,000, $75,000 and $90,000 over the next four years, assuming a 10% discount rate, what is the projects NPV? (3 points) (10) Would you recommend the project considered in question 9 above? Why or why not? (1 point) Income Statement of Company A Sales Revenue $4,396,223 Less COGS Fixed Costs Variable costs (42%) Gross Profits Less Operating Expenses Fixed Expenses Variable Expenses (2.8%) Operating Profits Less Interest Expense (2.7%) Net Profits before Taxes Less Taxes (21%) Net profits after taxes Less Dividend Increased Retained Earnings
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8.Hi, I've been trying to figure out what should be the simplest of formulas for over an hour now. Take ...

e a look at this spreadsheet so I can properly explain: Ok, so for the sake of simplicity We'll just go with row two here. Cell A2 represents the hours worked freelancing, where B2 is for the minutes of the recorded time frame. C2 is the net amount earned in that time. Over in cell N10 I need to figure out an equation using the =SUM() function (treats it as a normal math problem) where it prints the hourly income based on those three integers. I'll admit i was never great at math, but in my defense I've been up since 6 am yesterday (currently 3 pm) and have been running solely on caffiene and nicotine haha... The sheet is editable and I can see any changes you make in realtime. Is there any way you could help me out on this one? It's for a work report type thing.
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

mathematicsalgebra Physics