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Write the structural formula for each of the following compounds.
a. 3-ethyl-2,3-dimethylpentane
b. 3,4-diethylhexane
c. 2,3,4,5-tetramethylnonane
which gives the order for first ionization energies smallest to largest
Calculate the volume (in liters) occupied by 2.08 moles of nitric oxide (NO) at 5.84 atm and 76°C.
How much energy is released when 32.4 g of water freezes? The heat of fusion for water is 6.02 kJ/mol
The pI of alanine is 6.01. What percentage of the alanine in the solution is present as the anion. You may need to revisit the Henderson-Hasselbalch equation to solve this problem.
For complex molecules, such as those found in organic chemistry and those involving proteins, it is often the case that a) possible reactions are dictated by how the molecule was formed
solution if its conjugate acid. What is the pH of this combined solution? Always give two numbers after the decimal place
Substance A has a greater molar mass then substance B. Both are nonelectrolytes. If 50 g of substance A are dissolved in 250 g of water in one beaker
An oligomeric protein has a molecular weight of 168000. A 420 mg sample was treated with an excess of 1-fluoro-2,4-dinitrobenzene (Sanger\'s reagent) until the reaction was complete
The standard free energy of formation of nitric oxide, NO at 1000K is 78kJ/mol, calculate the equilibrium constant for this reaction at 1000K, N2(g) + O2(g) 2NO(g)
A living organism has an activity of 15.2 counts per minute (cpm) per gram of carbon. If a bone is determined to have an activity of 3.80 cpm per gram of carbon, how old is the bone?
When performing your experiment, you add your first drop of oleic acid/benzene solution, and a lens forms immediately.
You are titrating 150.0 mL of 0.070 M Ca2 with 0.070 M EDTA at pH 9.00. Log Kf for the Ca2 -EDTA complex is 10.65, and the fraction of free EDTA in the Y4- form, ?Y4-, is 0.041 at pH 9.00. Calculate the concentration of Ca2 at V = 1/2 Ve. Calculate..
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