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While equal molar amounts of the following sets of compounds are mixed in water, explain which will not form a buffer solution?a) NaH2PO4 with Na2HPO4b) NH3 with NH4Clc) CH3CO2H with NaCH3CO2d) HNO3 with NaNO3
Determine the empirical formula of perchloroethylene given that a 2.58-g sample yields 1.37g Co2 in a combustion analysis experiment. Add subscripts to complete the empirical formula.
Describe how you would prepare the following aqueous solution: 230 g of a solution that is 0.60 molal Na2CO3 starting with the solid solute.
You add an excess of Ca(OH)2 to water maintained at a particular temperature, stir until the solution is saturated, filter, then determine the [OH-] in the solution by titration with acid
Give the name and formula for the acid derived from each of the following anions. (Type your answer using the format CO2 for CO2.) (a) perchlorate (b) NO3- (c) bromite (d) F -
In one beaker: 10 mL of .005 M KMnO4 + 8 mL 1M NaOH + 15 mL .01M Na2SO3 In another bkr: 10 mL of .005 M KMnO4 + 15 mL .01 M Na2SO3 In another: 10 mL .005 M KMnO4 + 10 mL 1M H2SO4 + 25 mL .01 M Na2SO3 Write/balance 3 redox reactions (half-reactions..
How much heat in Kilojoules must be removed from a glass of water that contains 100G if water to lower its temperature from 30C to 15C.
Using a spectrometer and beers law to determine % of copper in a brass sample: what equations are used to determine all.
Teperature(K) Pressure(Torr) 65 130.5 70 289.5 75 570.8 80 1028 85 1718 1. Use the data to determine the heat of vaporization of nitrogen. 2.Determine the normal boiling point of nitrogen
The beta decay of cesium-137 has a half-life of 30 years. How many years must pass to reduce a 25 mg sample of cesium 137 to 8.7 mg
A 100. mL sample of 0.10 M HCl is mixed with 50. mL of 0.12 M NH3. What is the resulting pH?(kB FOR NH3= 1.8 x 10^-5)
in most cases the solid substance on the tlc plate called the stationary phase is quite polar. often it is sio2 called
when backpacking in the wilderness hikers often boil water to sterilize it for drinking. suppose that you are planning
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