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Define amphoteric behavior and give an example of it other than the one given in your lab manual. Why is it good to form only one precipitate when analyzing your unknowns? Why is it important to perform the ammonia tests with no other sets of cations in the tray? True or False: Confirmatory tests should always be carried out initially on a known sample of cations. Explain. If you add a silver ion solution to a carbonate ion solution a brown precipitate forms. What can this precipitate be? Explain possibilities and the way to determine what it actually is.
To help you explain your answer, look up the meaning of "isoelectric point" and discuss the effect that pH will have on the structure of your product.
Calculate the temperature of boiling water at an elevation of 6000ft (2000m) given that the atmospheric pressure is 0.8atm. Assume delta H_vap is independent of T.
Why is this only an approximation? Under what conditions can the selectivityremain temperature-independent?
A sample containing .221g Cl is dissolved in 50.0mL of water. How many moles of Cl ion are in the solution?
An optically activated alkyne A(C10H14)can be catalytically hydrogenated to butylcyclohexane. Treatment of A with C2H5MgBr liberates no gas.
Indicicate the coordinaiton number of the metal and oxidation number of the metal as well as the number and type of each donor atom of the ligands for the folloing complexes:
How many moles of chloride ions are there?
How much energy is released per Kg of Dilithium formed? Mass of one atom of 6 Li is 6.015121 amu. Do not know where to start.
the air in the laboratory was measured with a barometer to be 7.20 x 10 squared mm Hg. what is the laboratory air pressure in atm.
A 0.2500 g sample of impure potassium chloride was treated with an excess of AgNO3. The precipitate was filtered, washed, and dried in a crucible with an empty mass of 34.9736 g.
1. what are the average calories not calories per gram for each of your food items?2. use the nutritional information
Write the balanced formula unit equation for the reaction of magnesium with hydrochloric acid. What is the sum of the coefficients? Don't forget coefficients of one
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