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Describe and explain the possible effect on your results of the following experimental errors or variations. in each case, specify the component(s) whose percentage(s) would be too high or too low. a) after adding dichloromethane to panacetin, you didn't stir or shake the mixture long enough. b) during the NaHCO3 extraction, you failed to mix the aqueous and organic layers throughly. c) you mistakenly extracted the dichloromethane solution with 5% HCl rather than 5% NaHCO3. d) instead of using pH paper, you neutralized the NaHCO3 solution to pH 7 using litmus paper.
For each reaction, identify the substance being oxidized and the substance being reduced. Express answers as chemical formulas for oxidized and reduced answers. 1. 2Sr(s)+O2(g)----->2SrO(s) 2. Ca(s)+Cl2(g)---->CaCl2(s) 3. Ni^2+(aq)+Mg^2+(aq)+Ni(s)
At what temperature will a gas be at if you allow it to expand from an original 456 mL at 65 celcius to 3.4 L?
Trichlorofluoromethane (CCl3F) boils are 23.8C and its molar heat of vaporization is 24.8 kj/mol. Calculate the molar entropy of evaporation of CC3F (l)
what volume of a 15.0% by mass NaOH solution, which has a density of 1.116 g/mL, should be used to make 5.3 L of an NaOH solution with a pH of 10.0
If no heat is lost to the surroundings, what will be the final temperature of the mixture?
A particular enzyme catalyzed reaction was followed and data collected as indicated below. Using the data, determine the Michaelis constant and the maximum velocity of the reaction.
Write balanced total and net ionic equations for its reaction with aqueous NaOH. (Type your answer using the format (NH4)2CO3 for (NH4)2CO3, [NH4]+ for NH4+, and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients. Type the cation befo..
Calcium hydride reacts with water to form calcium hydroxide and hydrogen gas. How many grams of calcium hydride
Determine what type of bond is expected for a compound formed between Magnesium and Oxygen Based on these values,?
a coffee cup calorimeter contains 525.0 g of water at 25.0 oc. to it are added350.0 g of water at 48.3 oc 480.0 g of
Most of the solid did not dissolve because the Ksp of ferric hydroxide is very small at 3 x 10^-39. However, when a certain amount of strong acid was added, the entire amount of solid dissolved. Determine the pH of the solution at that point that ..
what would be the effects when changing the eluting solvents
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