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Understanding how electrostatic force scales with charge and separation alt=”qa_attachment_1564713879507.jpg”

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Get college assignment help at Smashing Essays Question Understanding how electrostatic force scales with charge and separation alt=”qa_attachment_1564713879507.jpg” /> ATTACHMENT PREVIEW Download attachment qa_attachment_1564713879507.jpg MATH AND PHYSICS Understanding how electrostatic force scales with charge and s… Decide how the sketches below would be listed, if they were listed in order of decreasing force between the charges. That is, select

I want the answer key for Acid Base titrations II:

Question I want the answer key for Acid Base titrations II: Diprotic System Lab for Chem II 1520.

I completely dotn get this topic, my proffessor did an

Question I completely dotn get this topic, my proffessor did an awful job at explaining im so lost :/ Please help me with the steps of this, thank you so much to whomever!!1)8fTo treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 17.1 g, and its initial temperature is -10.9 °C. The water resulting from the melted ice reaches the temperature of your skin, 28.7 °C. How much heat is absorbed by the ice cube and resulting water? Assume that all the water remains in your hand. Constants may be found here.7/At 1 atm, how much energy is required to heat 43.0 g of H2O(s) at -12.0 °C to H2O(g) at 167.0 °C? Helpful constants can be found here.10)The heat of vaporization of water is 40.66 kJ/mol. How much heat is absorbed when 2.50 g of water boils at atmospheric pressure?11)A sample of gas occupies a volume of 61.7 mL. As it expands, it does 143.3 J of work on its surroundings at a constant pressure of 783 torr. What is the final volume of the gas?13)The specific heat of a certain type of metal is 0.128 J/(g·°C). What is the final temperature if 305 J of heat is added to 50.4 g of this metal initially at 20.0 °C?

SOOOO confused with this topic would apprecieatte it so much

Question SOOOO confused with this topic would apprecieatte it so much if someone helped, with the steps esp, thanks so much!!8s14)In a constant-pressure calorimeter, 50.0 mL of 0.330 M Ba(OH)2 was added to 50.0 mL of 0.660 M HCl. The reaction caused the temperature of the solution to rise from 22.43 °C to 26.93 °C. If the solution has the same density and specific heat as water (1.00 g/mL and 4.184 J/g·°C, respectively), what is ΔH for this reaction (per mole of H2O produced)? Assume that the total volume is the sum of the individual volumes.8e2If you have 0.391 m3 of water at 25.0°C and add 0.117 m3 of water at 95.0°C, what is the final temperature of the mixture? Use 1000 kg/m3 as the density of water at any temperature.8d2In a constant-pressure calorimeter, 65.0 mL of 0.300 M Ba(OH)2 was added to 65.0 mL of 0.600 M HCl. The reaction caused the temperature of the solution to rise from 22.26 °C to 26.35 °C. If the solution has the same density and specific heat as water, what is heat absorbed by the solution? Assume that the total volume is the sum of the individual volumes. (And notice that the answer is in kJ)

1.For each type of distillation, state the boiling point difference

Question 1.For each type of distillation, state the boiling point difference required between the various components to achieve separation.Simple distillation:Fractional distillation:Distillation under reduced pressure:Short path distillation:Steam distillation

Chapter 9 Question 43Calculate the enthalpy of solution (ΔH for

Question Chapter 9 Question 43Calculate the enthalpy of solution (ΔH for the dissolution) per mole of CaCl2?

Give one effective way to lower activation energy and explain

Question Give one effective way to lower activation energy and explain why it is effective. Explain why adding more reactants does not lower activation energy.

Heat ExchangersHow can hot water be used to make a

Question Heat ExchangersHow can hot water be used to make a room feel warmer? How does an air-conditioner unit make a room feel cooler?Sketch and describe a typical temperature plot where a thermal utility service can be used to heat or cool a process fluid via a heat exchanger.Sketch and describe the operation of a plate heat exchanger.Sketch and describe the operation of a shell and tubes heat exchanger.

need help please with this question, How many grams of

Question need help please with this question, How many grams of NO are formed when 5g of O2 react according to this balanced equation 4NH3 5O2 -> 4NO 6H2O ATTACHMENT PREVIEW Download attachment qa_attachment_1564672518164.jpg Consider the following balanced Equation 4 NH 3 502 4 ND 6 H, 0 How many grams of cuill bas vilsubs No are formed when 59 of Oz react According to Above :IS MOIT2Bug Equation? to s -CE MOIT23US

This question was created from Case connections _ Unit 3.pdf

Question This question was created from Case connections _ Unit 3.pdf https://www..com/file/39107819/Case-connections-Unit-3pdf/ Is the answer ketogenesis? Beta oxidation makes Acetyl CoA which is used in ketone bodies. Also Carnitine would not work with the normal range of fatty acids being below the follow up test. ATTACHMENT PREVIEW Download attachment 39107819-332449.jpeg

General Chemistry pH and Ksp Practice alt=”DDD86C41-0EFF-4082-A055-53624FAE2E88.jpeg” /> ATTACHMENT PREVIEW

Get college assignment help at Smashing Essays Question General Chemistry pH and Ksp Practice alt=”DDD86C41-0EFF-4082-A055-53624FAE2E88.jpeg” /> ATTACHMENT PREVIEW Download attachment DDD86C41-0EFF-4082-A055-53624FAE2E88.jpeg 1) (5 points) Calculate the pH of a solution that is 0.322 M in nitrous acid (HNO2) and A) 3.090 0. 178 M in potassium nitrite (KNO2). Ka of nitrous acid is 4.50 x 10-4. B) 3.607 C) 14.26 D) 10.91 E) 4.589 2) (5 points) What is the pH of the above solution after 0.0500 moles of Sodium Hydroxide (NaOH) are added? A) 3.270 B) 3.090 C) 3.429 D) 2.884 E) 4.589

My question is about molar solubility, psp and pH ATTACHMENT

Question My question is about molar solubility, psp and pH ATTACHMENT PREVIEW Download attachment IMG_3177.jpg 3) What is the molar solubility of silver carbonate (Ag2CO3) in water? The Ksp for Ag2CO3 is 8.1 x 10-12 at 25.C. A) 1.3 x 10-4 B) 1.4 x 10-6 C) 2.0 x 10-4 D) 4.0 x 10-6 E) 2.7 x 10-12 4) (5 points) What change will be caused by addition of a small amount of HCI to a solution containing fluoride ions (F-) and hydrogen fluoride (HF)? A) The concentration of hydronium ions will increase significantly. B) The concentration of fluoride ions will increase as will the concentration of hydronium ions. C) The concentration of hydrogen fluoride will decrease and the concentration of fluoride ions will increase. D) The concentration of fluoride ion will decrease and the concentration of hydrogen fluoride will increase. E) The fluoride ions will precipitate out of solution as its acid salt.

Need help with chemistry homework, thank u! ATTACHMENT PREVIEW Download

Question Need help with chemistry homework, thank u! ATTACHMENT PREVIEW Download attachment bjo7z-jyfb8-001.jpg Which of the following CANNOT be a pure salt solution? 0 buffered O acidic O alkaline 0 neutral Which of all the following salts is not neutral? 0 MgBrz 0 NaCl O KI O Sr(NO3)2 A butler can be made by adding any ofthe following to 25 mL of 1.0 M CH3COOH except 0 5 mL 1.0 M KCH3COO o 10 mL 1.0 M Zn(CH3COO)2 o 25 mL H20 0 30 mL 1.0 M Zn(CH3COO)2 The pH after adding 24.0 mL of 1.0 M NaOH to 25.0 mL of 1.0 M HCl is O 12.3 0 1.7 O 1.4 O 0.020 Alkalosis is a condition where the body fluids are too alkaline. If someone with alkalosis uses a lot of salt on their food, 0 it won‘t directly affect their pH 0 it will aggravate their condition 0 the excess salt will lower their pH 0 the excess salt will raise their pH How could you perform a single test to determine which of three different solutions with universal pH indicator (one yellow, one green, one blue) contains a buffer? 0 add a drop of the green one to a drop of the blue, yellow,

1) What is the molar mass of Al(ClO2 style=”color:rgb(73,76,78);”>)3? Explain

Question 1) What is the molar mass of Al(ClO2 style=”color:rgb(73,76,78);”>)3? Explain how you calculated this value.2) What is the formula and name of the compound produced at the end of the virtual lab, and what caused it to have a different appearance than the tin and nitric acid that you mixed at the beginning of the lab?

The empirical formula of a compound is determined to be

Question The empirical formula of a compound is determined to be C2H3, and its molecular mass is found to be 54.10 g/mol. Determine the molecular formula of the compound, showing your work.

How do I count for the oxidation number on each

Question How do I count for the oxidation number on each atom? For example in ascorbic acid, how do I know the oxidation number for each of the carbon atoms?

Which bond in each of the following pairs of bonds

Question Which bond in each of the following pairs of bonds is the strongest and why?C-N or C-O C-H or O-HC ≡ O or C = O

src=”/qa/attachment/8998571/” alt=”D956A668-C742-4BFC-9B08-FA5B149C11A9.jpeg” />Please help with all answers I am stuck.

Question src=”/qa/attachment/8998571/” alt=”D956A668-C742-4BFC-9B08-FA5B149C11A9.jpeg” />Please help with all answers I am stuck. Attachment 1 Attachment 2 Attachment 3 Attachment 4 ATTACHMENT PREVIEW Download attachment 4CE5FF9E-03E4-4F94-B73E-8536551CA9CF.jpeg Explain, in your own words, why the pH of the distilled water is more sensitive to the addition of the acid than is the buffer solution: Buffers based on di- or triprotic acids may have multiple pH regions over which they are stable. That is, they exhibit some stability as the pH of solution is equivalent to each of their pkas (pKay, PKa2, pKa3). If you have a di- or triprotic buffer, state below whether you see evidence of this in the form of your pH curve. If you do not see evidence of this, explain why this should be the case. ATTACHMENT PREVIEW Download attachment 616A3D76-5A70-4D18-8070-4AD174D5B3B6.jpeg Part I: Determination of Ka or K, for an Unknown Solution Based on your knowledge of equilibrium, calculate the following. Show your work: [HO ] in unknown solution, at equilibrium: Concentration of molecular form of acid or base at equilibrium: If acidic, give the value of Ka: If basic, give the value of Kb: Part III: Titration of the Buffer Solution Use your data to make a plot of pH vs. volume of acid added. It is recommended you use a spreadsheet program such as Microsoft Excel. Make sure your x-axis begins at zero (i.e., it should report the pH at zero added acid). Part IV: Titration of Distilled Water Use your data to make a plot of pH vs. volume of acid added. It is recommended you use a spreadsheet program such as Microsoft Excel. Make sure your x-axis begins at zero (i.e., it should report the pH at zero added acid). ATTACHMENT PREVIEW Download attachment 72083529-16C3-4F60-9DD4-55D5453FC7BF.jpeg Data Part I: Determination of Ka or K, for an Unknown Solution Unknown number: 6 Concentration of unknown: 0.10. (0.100 M, unless you are told otherwise) PH: 10:320 2.35 Part II: Preparation of a Buffer Solution Target pH for the buffer: 8. 7 Perform calculations related to the preparation of the buffer here: List the components of your buffer in the table below. For example, if your buffer included 37.0 mL of 0.100 M acetic acid, enter: Acetic acid, 0.100 M, 37.0 mL. Solution Concentration (M) Volume (mL) 17 Ammonium Hydroxide 0.10 0 M Ammonium Chloride 0.100 M Experimentally observed pH of buffer created according to the formula above: 8.6 ATTACHMENT PREVIEW Download attachment D956A668-C742-4BFC-9B08-FA5B149C11A9.jpeg Part III: Titration of the Buffer Solution Initial pH of buffer: _ 8.87 Initial buret reading: Concentration of HCI: _0.10 Buret Reading Total Volume Observed pH 2.00 of HCl added* Ent 2.00 8 .7 4.05 LET 4. 00 8.50 6. 10 8.19 8.00 3.00 7.48 10.00 10.00 5. 08 12.00 12. 00 2.41 14. 30 14.50 2.14 16:00 16.00 1.99 1800 18.00 1.8 8 If you prefer, you may type your raw data (buret readings and pH) in a spreadsheet, and use that to calculate the volume added. If you do this, you must attach a printout with all three columns volume here. clearly labeled to this report. If you provide this spreadsheet, you do not have to calculate the added Part IV: Titration of Distilled Water Initial pH of distilled water: S. 78 Initial buret reading: 0:00 ML Concentration of HCI: _0.10 Buret Reading Total Volume of HCl added* Observed pH 1.00 ml 2.50 2.05 ml 2.00 ml 2. 22 3.0Oml 3:09 ML 2.07 4.00ml 4. SOML 1. 94 5:00mL 5. OO ML 1.86Read more

How much heat is produced when 1.25 g of chromium

Question How much heat is produced when 1.25 g of chromium metal reacts with oxygen gas under standard conditions?(answer)Heat produced on combustion of 1.25 g Cr = – 13.56 kJExplanation:Combustion reaction:Cr (3/4)O2 ———> 0.5 Cr2O3∆Hrxn = – 564.2 kJ/ moli.e 52 g Cr on combustion release energy = -564.2 kJ/ moltherefore energy released for 1.25 g Cr = (-564.2 kJ/ mol / 52 )* 1.25 = -13.56 kJ Can you explain how this answer is achieved?

Please list the oxidizing and reducing agents in the equation.

Question Please list the oxidizing and reducing agents in the equation. Then, list what is oxidized and what is reduced.   a. KClO3 → KCl O2b. HNO3 HI → NO I2 H2Oc. KNO3 → KNO2 O2d. CaCO3 HCl → CaCl2 H2O CO2e.  CuO H2 → Cu H2Oh. HCl NaOH → NaCl H2O

a) Defind and give chemical formulas of an acid, base

Question a) Defind and give chemical formulas of an acid, base and a salt, and tell us which of these 3 definitions is most useful when looking at these formulas. b) How is the Lewis definition for an acid and a base different from the Arrhenius and Bronsted-Lowry definitions? 

The post Understanding how electrostatic force scales with charge and separation alt=”qa_attachment_1564713879507.jpg” appeared first on Smashing Essays.

 
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