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In questions 2, 3, and 4, explain how the following actions would cause the quantity in question to be too large, too small, or no change. 2. An error was made in preparing the Fe(NO3)3 solution. Its concentration was 0.250 molar but was labeled as 4.300 molar. a. How would the slope of the calibration curve (absorbance on the "y" axis versus concentration of [Fe(SCN)]2+ on the "x" axis) be affected? b. How would this concentration error affect the calculated value of the equilibrium constant for the complex, [Fe(SCN)]2+? 3.How would your calculated value of Kc compare to the actual vale if the determination of absorbance were done on a solution that had been placed in a cell that was wet on the inside with rinse water? Explain. 4.When adding the solution of HNO3 from the buret in Step 14 to beaker 4, you know that you added 2.5 mL instead of 1.5 mL for a total volume of 11.0 mL. How would the calculated value of the equilibrium constant be affected for this sample?
Calculate the final temperature of 204 mL of water initially at 35 degrees C upon absorption of 18kJ of heat.
A flask contains 0.180 of liquid bromine br2, . Determine the number of bromine molecules present in the flask.
Important information about Organic Chemistry, The most reasonable formula for a compound demonstrating M+ =101 with a minor M+1 peak is
A 0.0050 molar solution of sugar is separated from pure water by a membrane at 20 C. What is the osmotic pressure?
Mixture where particles remain in semipermeable membrane, Particles of this mixture remain inside a semipermeable membrane. What is it Solution, colloid or suspension?
Radio wave radiation falls in the wavelength region of 10.0 to 1.00E+3 meters. What is the frequency of Radio wave radiation that has a wavelength of 426 m.
Compute the mass of solute and water needed to prepare the following solutions: 1. 150 g of 1.00 m (NH4)2SO4: (a) from pure solid (NH4)2SO4 (b) from solid (NH4)2SO4 with a purity of 87.2 wt-% 2. 1.50 L of a 20 wt-% Pb(NO3)2 solution whose density ..
Cannot be determined from the information provided. 9. Starting with the initial concentrations provided in the question above, what will be the equilibrium concentration of CO2? a) 1.6 M b) 1.8 M c) 2.0 M d) 2.2 M 10. What is KC for this process ..
A nitric acid solution containing 71.0% HN)3 (by mass) has a density of 1.42 g/mL. How many moles of HNO3 are present in 1.00L of this solution?
What are the percentages of each molecular ion? (List to nearest 1% in order of increasing mass separated by commas, e.g. 55,45.)
Calculate the solubility of zinc hydroxide, Zn(OH)2, in 1.00 M NaOH. Ksp = 3.0 × 10-16 for Zn(OH)2, Kf = 3.0 × 1015 for Zn(OH)42-
What mass of AlCl3 can be formed from 5.000 mol NiCl2 and 2.000 mol Al?
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