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Write the cell reaction for the combination of these half-cell reactions that leads to the largest positive cell emf
To identify a diatomic gas (X2), a researcher carried out the following experiement. She weighed an empty 4.2L bulb, then filled it with the gas at 1.30atm and 23.0C and weighted it again. The difference in mass was 6.3 g. Identify the gas
Write reaction equations to explain how your acetic acid/sodium acetate buffer reacts with an acid and reacts with a base.
when 1 mole of h2 gas reacts with 1 mole of f2 gas 2 moles of hf gas are produced and 536 kj of energy is released. is
The relative electrophoretic mobilities of a 30-kd protein and a 92-kd protein used as standars on an SDS polyacrylamide gel are 0.80 and 0.41, respectively.
an isolated quantity of an ideal gas at 294.2 k has a volume of 20.46 l at a pressure of 1.18 atm. what is the pressure
Draw a representation of the 3-D structure of the anion, including only the bonding-pair electrons, and any sulfur lone-pair electrons. What is the orientation of the oxygen atoms with respect to each other around the S?S bond?
Use VSEPR theory to predict the shape of each molecule: a) CF3; b) NCl3; c) SCl2; d) CS2; e) BFCl2.
Consider 2 Al + 6 HCl → 2 AlCl3 + 3 H2 , the reaction of Al with HCl to produce hydrogen gas. This reaction has a yield of 82.5 percent. How much HCl are needed to produce 14.0 L of H2 at 351 K and 1.11 atm
Calculate the percentage composition by mass of each of the elements in sulfuric acid. Report each of your answers to 4 significant figures
The rate of the reaction will increase if the pressure of the gases increases. The rate of the reaction will remain constant with increasing temperature. The rate of the reaction will increase as time increases.
How many grams of urea [(NH2)2CO] must be added to 585 g of water to give a solution with vapor pressure 2.63mmHg less than that of pure water at 30 degrees Celsius
Discuss the two main mechanisms in nucleophilic substitution reactions. Provide examples, show reaction diagrams, discuss controls of reaction rates, stereochemistry
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