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Phenylacetic acid C6H5CH2COOH is one of the substances that accumulates in the blood of people with phenylketonuria, an inherited disorder that can cause mental retardation or even death. A 0.085 M solution of C6H5CH2COOH has a pH of 2.68.Calculate the Ka value for this acid.
Make educated guesses at the pictures for the LGO's for tetrahedral and octahedral. Propose the appropiate pictures for the LGO's symmetry labels for the square pyramidal Cr(CO)5. With your pictures, can you justify the energy levels for the bondi..
density generally increase decrease or remain unchanged when items are heated,Briefly explain your answer?
A mixture of ammonium chloride and sand is placed in an evaporating dish and massed at 56.246g. The mixture is heated, driving off the ammonium chloride and massed again
A chemist dissolves 284 mg of pure potassium hydroxide in enough water to make up 140 mL of solution. Calculate the pH of the solution.
Describe briefly four types of batteries. In your description, include the redox reactions
Air contains nitrogen, oxygen, argon, and trace gases. if the partial pressure of nitrogen is 587 mm Hg, Oxygen is 158 mm Hg, argon is 7 mm Hg, and trace gas pressure is negligible, what is the atmospheric pressure?
a bomb clorimeter contains 2.5 liters of water if the combustion of .175 moles causes the temperature of the water to rise 45 degrees celsius, what is the molar heat of combustion.
the partial pressure of oxygen in air at sea level is 0.21 atm. using the data in table 13.2, together with henry's law, calculate the molar concentration of oxygen, in the surface water of a mountain lake saturated with air at 20 degrees celcius ..
If the crucible Cover falls and breaks during the heating of Magnesium, do you have to start the experiment over again?
9.92 grams of a compound with a molar mass of 124.0 grams/mole when dissolved in 150.0 grams of water gave a solution which had a freezing point of -2.69 °C. Calculate the experimental value of the van't Hoff factor.
A 255-mL sample of HCl solution reacts with excess Mg to produce 14.0 L H2 gas at STP. What is the molarity of the HCl solution?
calculate the heat of hydrogenation of naphthalene. Does this value provide any evidence for aromatic character in naphthalene?
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