SHOW WORK. Calculate the molarity of the solution when 0.0507 moles of CaCl2 is dissolved in 0.500 L of solution. In the three blanks, enter the value (decimal notation with proper s.f.), units, and substance (in this order).
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- A saturated solution of KNO3 was prepared at 25° Cby dissolving 12.050 g KNO3 in water and the total volume of the solution is 10.5 mL. Determine the moles of KNO3 in the solution and enter it below. moles This number should have significant figures. (enter in the number of sig figs in the box). Now determine the concentration of K*and NO3 in the solution. Enter these values below. [K*]= M [NO3 ]= These numbers should have significant figures. (enter in the number of sig figs in the box).B. MEASUREMENT OF AH OF NEUTRALIZATION 61.69 g Mass of HCl/H,0 solution 42.66 g Mass of NaOH solution 3 M Molarity of HCl 3 M- Molarity of NaOH 21.5 C Temperature of HCI/H,O solution, T, 24 C Temperature of NaOH, T, | 26 C Final temperature from graph, T; AT for HCl/H,O solution AT for NaOH solution Heat evolved by reaction Show your work for each calculation performed.4. Determine the molarity of a solution prepared by dissolving 155.6 g of citric acid, C3H5O(COOH)3, in water and then diluting the resulting solution to 4500.0 mL. please show work
- -NEUTRALIZATION REACTIONS Can you help me with this one? The given problem is in the image that I've attached 1. Based on the given problem, What is the molecular weight of potassium biphthalate (C8H5KO4)? 2.Based from the given problem, what is the mEq of potassium biphthalate? 3.Based from the given problem, what is the Normality of the sodium hydroxide solution? Would you please provide a separate solution to each question, thankyou! Here are the instructions on how will you write the answers: 1. All answers to be entered via short answer are in the NUMERICAL FORMAT and presented up to the 3rd decimal place. ADD TRAILING ZEROS if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT for now.For uniformity of answers, please be guided by the following examples:- If your answer is 5.627594, enter 5.628- If your answer is 3.129934, enter 3.130- If your answer is 8.38, enter 8.380- If your answer is 1.2, enter 1.200- If your answer is 25, enter 25.000- If your answer is…y! how to Q What g. y zinc anc y ideal ga y What g Q What g y What g W molarit Experim ourse.html?courseld%3D15828855&HeplD=537061946710f71a192e43597b01c6e0#10301 Lab Lab Part A Why is the KMnO, solution filtered? O KMNO4 doesn't need to be filtered prior to use. O Most commercial samples contain inorganic matter that will react slowly with the KMnO, and cause its decomposition. O KMNO is very stable, but the unstable ions in the commercial packaging materials must be removed prior to use. Most commercial samples of KMnO4 contain some manganese dioxide that must be removed prior to use to avoid further decomposition. Submit Request Answer Part B Why is the KMnO, not stored in a rubber-stoppered bottle? Rubber doesnt make a good seal with the plastic bottles in which permanganate is usually stored. Rubber can oxidize the permanganate solution. P Pearson Copyright 2020 Pearson Education Inc. All righrs reserved. Terms ofUse I Prvacy Policy Permission: 40 DELL24. Complete the (ag) dissolution equations for each solute, identify the solution as electrolyte or not (EL: Y ? N), and use the molarity of solute formula given to find the total molarity of all solute çp's present in that solution. Follow the example in the first row: EL: molarity of total molarity of all Solute H2O, balanced ç.p's in (ag) state Y ? N solute formula solute c.p's in solution CaCl2(s) Са2*(ag) + 2CI (ag) Y 0.20 M 0.2 + 2 x 0.2 = 0.6 M Li,SO:(s) 0.45 M Mg(CIO4)2(s) 0.2 M CH3OH(I) 3.5 М
- In the experiment of making salted eggs, a cleaned egg is immersed in a solution a lot of Nacl salt. Nacl in solution diffuses into the egg through the eggshelI, then towards the egg whites and yolks. Eggs can be considered perfectly spherical in shape with the radius in R and the thickness of the eggshell is T. The concentration of NaCl in the soaking solution is Caci,o and its value can be considered constant during the immersion process. Before being included in soaking solution, there is no Nacl in egg whites and egg yolks. Diffusion through eggshell can be ignored because it occurs very quickly. If the diffusivity coefficient of Nacl in egg white and egg yolk can be considered equal (DNaci), a. Use the component continuity equation table, so that the equation that is describe the profile of Nacl concentration in eggs (in the form of a differential equation along with the boundary conditions). b. Convert the equation obtained in point a into an equation of the form dimensionless…The last calculation we need to do is find the %acetic acid (a.k.a the "acidity"). We can average all of the acetic acid masses from the completely reacted samples in the previous step. For now, let's assume we ended up with a final average mass of 2.37 g acetic acid consumed. If the initial volume of acetic acid used was 50.0 mL, what's the %m/v of acetic acid?5. a. Rank the components of milk, generally, from most soluble to least soluble in water. Justify your ranking. b. Which component(s) would be soluble if you used CH,Cl, for your solvent? Justify your answer. O Type here to search 36F へ菲* @ 6. 7. 80
- 25.00 mL of a solution containing 3.6 M H2O2 What mass of a 30.00% (w/w) hydrogen peroxide solution is required to provide the mass calculated above. (Start with the amount from the prvious question) (a30.00% w/w solution means 30.00gsolute/100 gsolution)? ( Keep an extra digit)Type your numerical answers in the box provided in three significant figures (e.g., 0.0123). Do not report your answer in scientific notation. No need for units. If Canvas drops your last zero digit/s, it is OKAY. (e.g. 1.20 to 1.2). Consider a solution of 0.0500 M HF (K= 7.20 x 10-4) for nos. 25 28. Determine the following: 25. equilibrium molar concentration of H3O%3= 26. equilibrium molar concentration of HF = 27. pOH = 28. %ionization %3DConsider the Solubility Curve for this Problem: Analysis for KClO3 & NH4Cl MW (KClO3) = 122.55 g/mol , MW (NH4Cl) = 53.49 g/mol i) What is the temperature at which KClO3 & NH4Cl both have the same solubility? Round to nearest degree. +/- 1° T = °C ii) What is the solubility (g per 100g H2O) at this temperature. Round to nearest gram. +/- 1 g s (KClO3) = g/100g H2O s (NH4Cl) = g/100g H2O iii) What is the molar solubility for KClO3 at this temperature? Assume the density of the solution is 1.21 g/cc. Round off to 2 sig. figs. |s| KClO3 = M iv) Calculate the Ksp for each of these chemicals at this temperature. Ksp = v) What is the unit of Ksp for KClO3? Unit for Ksp =
