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What is the concentration of CO3^2- in a 0.020 M solution of carbonic acid, H2CO3? For a carbonic acid, Ka1 = 4.2 x 10^-7 and Ka2 = 4.8 x 10^-11.
A) 4.8 x 10^-11 MB) 2.0 x 10^-2 MC) 4.6 x 10^-5 MD) 4.2 x 10^-7 ME) 9.1 x 10^-5 M
What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia?
Siver nitrate is sadded to a solution containing an unknown salt. An off-white colored precipitate forms. Nitric acid is added to the mixture, the precipitate dissolves and a gas is given off. What is the anion present: Cl-, Br-, I-, PO4 3-, SO4 2..
A gaseous mixture of and contains 35.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 585 ?
Acetyl chloride reactions, What major organic products would you expect to be formed when acetyl chloride reacts with the following reagents?
What final temperature, in degrees celcius, is needed to change the volume of the gas to each of the following, if n and P do not change?
Assume the radius of a neutron to be approximately 1.0; times ;10^{ - 13} {rm cm}, and calculate the density of a neutron.
Calculate the entropy change for the system and the surroundings. The heat of fusion of water is 6.02 kJ/mol; Cp (water)=4.184 J/K/g, Cp(ice)=2.094 J/K/g.
a nugget of gold with a mass of 521g is added to 50.0ml of water. the water level rises to a volume of 77.0ml. what is
In an excess amount of oxygen, how many grams of CO2 (g) are theoretically produced from the combustion of 901.0 g of glucose [C6H12O6 (s), molar mass of 180.2 g/mol]?
hard, amorphous polymers become soft and flexible at the glass transition temperature B) crystalline regions of a polymer melt transition temperature C
In the following experiment, the water in the glass is stirred by slowly lowering a weight (m=3kg) through a series of pulleys. If the 3kg weight is lowered 10m, the stirrer spins, but eventually all of the kinetic energy of the stirrer is turned ..
Bromothymol blue is a common acid-base indicator. It has a Ka equal to 1.6 x 10^-7. Its un-ionized form is yellow and its conjugate base is blue. What color would a solution have at pH = 5.8
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