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Methyl OrangeMethyl Orange is an acid-base indicator. In dilute solution, at pH greater than 4.4, it is yellow. At pH=3.2 the solution appears red. Draw a structure of the species that is formed at the lower pH of the acid proton adds to the azo nitrogen atom adjacent to the aromatic ring containing the -SO3 group. Why does the proton add to this particular nitrogen when two other nitrogen atoms are available in the molecule?
When 31.7mL of 0.235M Potassium hydroxide is required to completely neutralize 26.0mL of a HC 2 H 3 O 2 solution, calculate the molarity of the acetic acid solution.
You have 47.2 mL of a solution of copper(II) chloride (CuCl2?). You need to determine the concentration of Cu2+ in the solution gravimetrically.
If 1.50 g of (NH4)2SO4 is dissolved in enough water to form 200. mL of solution, what is the molarity of the solution.
Determine what is element Y if you have a compound consists of element "Y" and H, only and know that it is 79.89% element Y by mass. Each molecule has 3.00 times as many H atoms as Y atoms?
Gaseous hydrogen has a density of 0.0899g/L at 0 degrees Celsius. How many liters would you need if you wanted 1.0078 g of hydrogen?
White phosphorus is a molecular solid made of molecules of P4. A 3.88 g sample of white phosphorus starts at 24oC. Calculate the amount of heat (in J) required to melt the sample.
calculate the vapor pressure of a solution of glycerol of 265ml in 3.80x10^2ml of H2O at the normal boiling point of H2O
When scuba diving, it is important to come back to the surface of the water from deep dives slowly. If this does not happen, then the diver can get the ?bends?.
Question about States of Matter, Ian eats too many mars bars. To try to get rid of the excess kJ's he exercises in the gym by using a weights machine which works by compressing a cylinder of gas.
What is the pH of a solution that has a formic acid (HCHO2) concentration of 0.39 and a potassium formate (KCHO2) concentration of 0.12? The Ka for formic acid is 1.7 x 10-4.
A sample of helium gas has a volume of 241 mL at 0.83 atm. What pressure is needed to reduce the volume at constant temperature to 35 mL.
A solution is prepared by dissolving 179 g sucrose (C12H22O11) in enough water to produce 1.15 L solution. What is the molarity of this solution?
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