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- 1) Listen -5 The Ksp value for calcium sulfate [CaSO4] is 2.40 X 10 and a professor made 1825 mL of a CaSO4(ag) solution but then one of his graduate student accidentally poured in a 0.125 M solution of calcium phosphate [Cag(PO4)2] solution. You may ignore the additional volume coming from the Ca3(PO4)2 solution to make the calculation simpler. Calculate the new sulfate (SO42) ion concentration at equilibrium with this common ion effect. 6.40 x 10-5 5.25 x 10-5 6.21 x 10-5 5.44 x 10-5 201591..docx LAB EXP. #3 -..docx Show AllA solution of FESCN2+ has a concentration of 1.00 x 10-M and an absorbance of 0.755. What is the concentration of an FeSCN2+ solution with an absodbance of 0.491? Enter your answer in scientific notation, with one decimal place, as follows: 2.3e-4 or 2.3E-4 Do not include units and note that 10 and x are NOT USED in this type of scientific notation. Question 3 of 26>»OWLV2 | Online teaching and X 0mySigTau xb Login | bartleby X M COMM.1113: FUND OF ORA X G what food has c - Google Se X + om/ilrm/takeAssignment/takeCovalentActivity.do?locator=assignment-take D [References] hotogray lenses incorporate small amounts of silver chloride in the glass of the lens. When light hits the AgCl particles, the following reaction occurs: hv AgCl Ag + Cl The silver metal that is formed causes the lenses to darken. The enthalpy change for this reaction is 2.90 × 10² kJ/mol. Assuming all this energy must be supplied by light, what is the maximum vavelength of light that can cause this reaction? Wavelength %3D nm Submit Answer Try Another Version 3 item attempts remaining Previous Next
- Ti me [A] [B] [C] [D] (mi (M) (M) (M) (M) n) 0.2 0.60 0 0.00 0.00 00 0 0.1 0.58 0.00 0.00 5 94 9 51 52 0.1 0.56 0.01 0.01 10 90 9 03 05 0.1 0.53 0.01 0.01 15 82 5 53 51 0.1 0.48 0.02 0.02 25 75 6 49 50 0.1 0.41 0.03 0.03 40 60 3 82 84 0.1 0.30 0.05 0.05 60 46 1 46 47 Calculate the average rate of consumption of A from 10 to 40 minutes. -1.00×103 M-min-1 -7.50x104 M-min-1 7.50×104 M-min-1 ○ 1.00×10-3 M.min-1Refer to Figure 1 and answer the following questions: (i) (ii) Pictograms are symbols used in Global Harmonized System (GHS) to make hazard communication more effective. Use one key word to describe the meaning of Pictogram 1, 3, 4, 8 respectively. Provide an example of chemical compound for each. Assign relevant pictograms to the following activities. Activity 1: Heating sodium chloride with concentrated sulfuric acid Activity 2: Preparing aqueous sodium borohydride in a closed glass vessel Activity 3: Adding diethylene glycol to potassium permanganate solid 1 4 2 5 3 6 th 7 8 9 Figure 1. Pictograms under GHS system.(3) Cro3, H30*
- For the following questions (Q1-Q5), consider the compound tartrazine (Yellow 5 food dye) that has a chemical formula of C16H9N4Na3O9S2. Ana weighs out 0.1328 g of tartrazine powder on the balance for her experiment and makes a stock solution by dissolving her powder in 500.0 mL of solution. Concentration (µM or µmol/L) Absorbance 0.00 0.001 9.94 0.252 19.9 0.506 29.8 0.738 39.8 1.018 slope (m): 0.02534 1/(µM) y-intercept (b): -0.0009147 Q4. Calculate the molar extinction coefficient (molar absorptivity) of tartrazine in units of 1/(M·cm). Assume a cuvette path length of 1.00 cm.For the following questions (Q1-Q5), consider the compound tartrazine (Yellow 5 food dye) that has a chemical formula of C16H9N4Na3O9S2. Ana weighs out 0.1328 g of tartrazine powder on the balance for her experiment and makes a stock solution by dissolving her powder in 500.0 mL of solution. Concentration (µM or µmol/L) Absorbance 0.00 0.001 9.94 0.252 19.9 0.506 29.8 0.738 39.8 1.018 slope (m): 0.02534 1/(µM) y-intercept (b): -0.0009147 Q5. If Ana determines the absorbance of an unknown tartrazine sample to be 0.662, what is the concentration of the sample in µM?Density of iPrOH = 786 kg/m^3 molar mass of iPrOH= 60.1 g/mol



