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Although the use of absorbances at 450 nm provided you with maximum sensitivity, the absorbaces at, say, 400 nm or 500 nm are not zero and could have been used throughout this experiment. would the same value of K be obtained at one of these wavelengths?
A reaction of importance in the formation of smog is that between ozone and nitrogen monoxide described by: O3 +NO ---> O2 +NO2
A student attempted to identify an unknown compound by the method used in this experiment. she found that when she heated a sample weighing 0.4826 g, the mass barely changed
Calculate the amount of water (in liters) that a camel can produce from 1.0 kg of fat. Assume for simplicity that the fat consists entirely of tripalmitoylglycerol. please show work how you arrive with the answer.
Calculate the pH of a solution in which the concentration of the hydronium ion is 2.0 x 10^-4 M.
Calculate the mass of magnesium, in mg, needed to generate 80.0 mL of H2 gas. Assume a temperature of 22.0 °C
Calculate the mass of KI in grams required to prepare 5.00x10^ 2mL of 3.2 M solution.
In the first step of the synthesis of PABA, why was it necessary to add sodium acetate to have reaction of p-toluidine with acetic anhydride?
What quantity of Cu(NO3)2 is present in 201 mL of a 0.50 M solution?
What is the alkali-aggregate reaction? List some of the rock types that are vulnerable to attack by alkaline solutions. Discuss the effect of aggregate size on the phenomenon.
Suggest why Po-210 and At-211 are the isotopes of those elements with the longest half-lives.
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.120 M HClO(aq) with 0.120 M KOH(aq). The ionization constant for HClO is 4.0×10-8
Is the reaction exothermic or endothermic? b) Calculate the heat produced when 10.0 g of AlCl3 forms. c) How many grams of Al are required to produce 1.00 kJ of energy?
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