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Acid rain over the Great Lakes has a pH of about 4.5. Calculate the [H_3O^+] of this rain.
What is the theoretical yield(in grams) of aspirin ,C9H8O4, when 2.00g of salicylic acid,C7H6O3, is reacted with4.00g of acetic anhydride
Determine the shape (geometry) of PCl3 and then decide on the appropriate hybridization of phosphorus in this molecule
Explain Solid State Chemistry, 1) Write the balanced chemical equation for Fe2O3+2Al?2Fe+Al2O3 using the lowest possible whole number coefficients.
The spectrophotometer is to be set at 447nm. What experiment could you do, what data would you collect
An unknown organic compound is mixed with 0.5190 g of naphthalene crystals to give a mixture having a total mass of 0.5959 g. The mixture is heated until the naphthalene melts and the unknown substance dissolves.
A volume of 25.0 mL of .100 M HCl is titrated against a .100 M NH3 solution added to it from a buret. Calculate the pH value of solution (a) after 10.0 mL of NH3 solution have been added and
A gas expands and does P-V work on the surroundings equal to 345 J. At the same time, it absorbs 191 J of heat from the surroundings. Calculate the change in energy of the gas.
296K(temperature), if you placed 2.58g of CrCl3*6H2O in a graduated cylinder and attempted the same experiment, what ?m would ypu observe?
The half life of Iodine-131 is 8.0252 days. If 14.2 grams of I-131 is released in Japan and takes 31.8 days to travel across the Pacific
Use the Henderson and Hasselbalch equation to calculate the pH of a buffer solution that is 0.45 M in NH4Cl and 0.15 M in NH3
calculate the temperature (in EC) at which the vapor pressure is 760 torr. The vapor pressure of Ethanol is 115 torr at 34.9EC
collected over water at 22 degrees C and the total pressure of the wet gas were 710 mm Hg, what would be the partial pressure of the oxygen?
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