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A 3.23 gram sample of a sodium bicarbonate mixture was reacted with excess acid. 48.52 mL of the evolved gas was collected over the water at 0.930 atm and 23.0 degrees Celsius. What is the percentage of sodium bicarbonate in the original mixture?
Predict if the following conditions would result in the formation of a preecipitate: a. 0.0025 M Fe3+ at pH 6.00 b. 0.0025 M Ba2+ and a 1.25x10-4 M solution of sodium sulfate c
a 15m x 15m x 3.0m basement had a high radon content. on the day the basement was sealed off from its surroundings so
a 7.95 L Container holds a mixture of two gases at 37 degrees celcius. the partial pressure of gas A and gas B, respectively, are .287 atm and .698 atm. if .210 mol a third gas is added with no change in volume or temperature.
A buffer solution containing 0.25 M Acetic acid and 0.56 m Sodium acetate. After addition of 0.0060 mol HCL what is Ph of buffer.
although not a transition element, lead can form two cations: Pb2+ and Pb4+. write the formulas for the compounds of these ions with the chloride ion.
In a coffee-cup calorimeter, 1.40 g of NH4NO3 is mixed with 79.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.23°C.
Using curved arrows to symbolize electrons, write a complete reaction mechanism for the bromination of acetanilide to create p-bromoacetanilide.
A sample of oxygen is collected over water at 22 C and 752 mm Hg in a 125-mL flask. the vapor pressure of water at 22 C is 19.8 mm Hg. how many moles of dry gas are collected and how many moles of wet gas are in the flask
Draw the Lewis structure of the lowest energy imidazolium ion. This is the lowest energy product formed when imidazole is protonated.
If you use 25.0 mL of the 0.24M sodium hydroxide solution to titrate a 0.40 M solution, how many mL of HCl will be used
If the reaction takes place in a reaction vessel that is 37,500 L, what is the pressure in the tank after the reaction has gone to completion. What is the pressure of each of the compoents in the reaction vessel
As a technician in a large pharmaceutical research firm, you need to produce 450. of 1.00 potassium phosphate buffer solution of = 7.38. The of is 7.21. You have the following supplies: 2.00 of 1.00 stock solution
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