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By using any titration curve as a reference devise a rule for determining whether or not an acid is protonated in solution. This rule should incorporate both the pH of the solution and the pKa of the acid.
How many grams of are CaH2 needed to generate 147L of H2 gas if the pressure of H2 is 827 torr at 20 C?
At what position will the electrophilic aromatic substitution occur for the following compounds? bromobenzene, nitrobenzene, benzoic acid, toluene, phenol, and benzaldehyde
The feldspar sanidine KSi3AlO8 is found in quickly cooled volcanic (extrusive) rocks whereas microcline is found in slowly cooled intrusive rocks such as granites
Torsional strain resulting from eclipsed C!H bonds is approximately 4.2 kJ (1.0 kcal)/ mol, and that for eclipsed C!H and C!CH3 bonds is approximately 6.3 kJ (1.5 kcal)/ mol. Given this information, sketch a graph of energy versus dihedral angle f..
prepare 3.9L of a HCN/NaCN buffer that has a pH of 9.70 and an osmotic pressure of 1.27atm at 298K. What masses of HCN and NaCN should you use to prepare the buffer
Prepare a molecular orbital energy level diagram for NO, showing clearly how the atomic orbitals interact to form MO's b) How does the diagram illustrate the difference in electronegativity between N and O
When a solution of A is mixed with one containing B- ions, the color changes from green to red. Which species is oxidized?
A 12-oz (355-mL) Pepsi contains 38.9 mg caffeine (molar mass ?? 194.2 g/mol). Assume that the Pepsi, mainly water, has a density of 1.01 g/mL.
A mixture of two miscible solvents that may be used as the solvent for a recrystallization experiment would be which of the following
A gas mixture composed of helium and argon has a density of 0.853g/L at a 745mmHg and 298K .What is the composition of the mixture by volume?
Why does this calculation only provide an estimate of the NaOH concentration. In other words, why do we have to standardize the HaOH in this experiment to find its exact concentration
A nugget of pure gold of 4.80 grams is absorbed 284 Joules of heat. if the initial temperature was twenty eight degree Celsius then what was the final temperature of the Au? The specific heat of gold = 0.129 J/(g·°C)?
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