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A buffer is prepared by dissolving HONH2 and HONH3NO3 in some water. Write equations to show how this buffer neutralizes added H+ and OH?
A flask contains 0.500 mol of liquid bromine, rm Br_2. Determine the number of bromine molecules present in the flask.
if 28ml of 7.0m sulphuric acid was spilled determine the minimum mass of sodium bicarbonate or sodium hydrogen
How can the molarity of chloride ion be calculated when 16 mL (2 mL intervals) of 12 M HCL is added to 5 mL of 0.4 M CO(NO3)2?
Ammonia condenses to form a liquid at -33.35C at atmospheric pressure. The density of liquid ammonia at this temperature is 0.6818g/ml. If the ammonia (0.224ml) is condensed at these temperatures, what would be its volume?
Herbigon will be soluble at the concentration needed to kill weeds. What pH must the solution have to yield a solution in which the concentration of X+ is 6.00×10?3M ? The pKa of acetic acid is 4.76.
a calorimeter contains 27.0 grams of h2o at the temperature of 14.5 degree celsius. when 1.40 grams of a substance that
The specific gravity of our calcium chloride solution is 1.33 when processed. The volume in Tank One is 4,250 gallons of processed calcium chloride at 32% pure CaCl2. Water is 8.34 pounds/gallon.
If you drink a glass of water, what mass, in grams, of this "unknown" substance will you ingest. The volume of your drink was 250 mL and the density of the water was 1.00g/mL.
A flask contains 0.350 grams of liquid Br( bromine). calculate the number of (Br)bromine molecules present in the flask
The mercury level in the open end of the manometer is 22 mm below that in the side connected to the argon. What is the pressure of argon, in mmHg
The root-mean-square (rms) speed of a sample of molecules was found to be 1.8 x 10^3 m s at 25C. After heating, the rms speed was found to be 4.6 x 10^3 m s. What was the temperature of the sample after heating
Draw the molecular orbital diagram for the acetylide anion (C22-). Assume that order of the n=2 molecular orbitals in increasing energy is
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