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A Catechin can undergo acid/base chemistry. Draw the structure of Catechin in solution after excess calcium hydroxide has been added. Also, which structure will be more soluble in water? (The catechin or catechin with excess calcium hydroxide?).
Methyl orange is an indicator (buffer solution) that is red in its acidic form (HMO) and orange in its basic form (MO-). A solution at pH 5.0 contains methyl orange. Calculate the ratio of concentrations [MO-]/[HMO] in this solution. pKa methyl or..
On a smoggy day in a certain city the ozone concentration was 0.54 ppm by volume. Calculate the partial pressure of ozone and the number of ozone molecules per liter of air if the temperature and pressure
This solution has an osmotic pressure of 2.60 atm at 25°C. If each molecule of the solute dissociates into two particles (in this solvent), what is the molar mass of this solute?
Copper reacts with any oxygen present as an impurity in the ethylene used to make polyethylene. The copper is regenerated when hot H2 reduces the copper(II) oxide, forming the pure metal and H2O.
Fire Behavior and Combustion
The perovskite structure is common for mixed metal oxides and halides. In this structure A and B are cations of different sizes and X is either an oxide or halide. the structure is built up of a simple cube of A cations with anions in the center o..
A solution of methanol, CH3OH, cotains 55.0 grams of methanol in 100. mL of water solution. What is the molarity of methanol in the solution?
What is the formula of a compound that crystallizes with copper ions occupying one-half of the tetrahdral holes in a FCC array of fluoride inon
Why was the titration performed by the addition of permanganate solution to oxalate solution and not the other way around? Why was the experiment performed at an elevated temperature?
Describe how you would make 2mL of the solutions that you described in the above using a 1.0 mg/mL solution of hemoglobin and a buffer to dilute it with.
The composition of a gas on a dry basis is 77.0 mole % N2, 9.0% O2, 11.0% CO2, and 3.0% CO. If the mole fraction of water is 0.170, what is the gas composition on a wet basis
If 35.0 g each of iron and chlorine react, how much FeCl3 will be formed?
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