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Calculate the number of moles of carbon dioxide formed if 231 grams of calcium carbonate decomposes. CaCO3(s) ? CaO(s)+CO2(g)
find the specific solubilities (in g/100g H2O) in both cold and hot water for AgCl, PbCl2, and Hg2Cl2.
The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to obtain 395 g of pure Cu?
The density of copper is 8.92 g/cm3 and the density o zinc is 7.14 g/cm3. Assume that the density of the brass varies linearly with composition.
Identify the original liquid and write a structure for the solid derivative. After identifying the unknown liquid, can you indicate what the structure of the precipitate obtained on reaction with bromine might be?
Would you expect a carboxylic acid group within the water-free interior of a protein to have a higher or lower Ka than it would have if it occured on the protein's surface, where it is hydrated
the indicated ph value for the titration of 50.00 ml of .100 M benzoic acid (ka = 6.3 x 10^-5) with .0500 M KOH: ph = 4.20, 4.50.8.06, 11.50. write te reaction for KOH reacting with benzoic acid and the equilibrium for each pH value
Calcium nitrate will react with ammonium chloride at slightly elevated temperatures, as represented in the equation Ca(NO3)2(s) + 2NH4Cl(s) ? 2N2O(g) + CaCl2(s) + 4H2O(g). What is the maximum volume of N2O at STP that could be produced using a 2.4..
Calculate the pH of 0.40 M KNO2. What is the concentration of HNO2 in the solution
draw an energy level diagram for Hydrogen starting at n=2 and ending at n=6. (n=1 transitions are high-energy transitions and emit in the ultra-violet region).
A sample of neon has a volume of 610 mL when it is at a pressure of 867 mmHg. What will be the volume when the pressure is increased to 1760 mmHg
Methane (CH4), ammonia (NH3), and water (H2O) all have octets around the central atom, yet they have different shapes and bond angles
An ideal gas in a sealed container has an initial volume of 2.25 L. At constant pressure, it is cooled to 21.00C where its final volume is 1.70 L. What was the initial temperature
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