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The solubility of ammonium chloride at 70C is 60g of solute per 100g of water. What solution would be saturated at 70C?
When 2.00 mL of a 5.0 ppm Cu^2+ solution was added to the above Cu^2+ sample solution, the new absorbance was found to be 0.324 AU. What was the concentration of Cu^2+ in the original 10.0 mL solution
Porphyrin complexes are among the most important chelating agents in nature. Which statement is correct concerning these
40.0L of H2 at 850mmHg and 75.5 degrees celsius is reacted with an excess of I2. What mass of HI is formed? H2(g) + I2(g)--> 2HI(g)
if 100. ml of 1.60 m na2so4 is added to 200. ml of 2.40 m nacl what is the concentration of na ions in the final
Specify which compounds in the following pairs of ionic compounds has a higher lattice energy. (A) KCl or MgO (B) LiF or LIBr (C) Mg3N2 or NaCl Expalin why for each
molecular orbital theory compare these species with regard to A. their magnetic character B. net number of pie bonds C. bond orber, and D. bond length
How much heat is needed to vaporize 2.42 g of liquid oxygen if the molar heat of vaporization for oxygen is 1,629 cal/mole?
Calculate the grams and milliliters corresponding to 100 mmol of t-amyl alcohol, and the theoretical yield of t-amyl chloride.
Calculate the vapor pressure of water above a solution prepared by dissolving 26.9 g of glycerin (C3H8O3) in 183 g of water at 343 K. Vapor Pressure (torr) at 343 (or 70) is 233.7 torr
A certain reaction has an activation energy of 70.0 Kj/mol and a frequency factor of A1 = 4.80×1012. A) What is the rate constant, k , of this reaction at 30.0 C
The Goodyear blimps, which frequently fly over sporting events, hold approximately 1.60×105 ft^3 of helium. If the gas is at 25deg C and 1.0 atm, what mass of helium is in the blimp
Chlorine reacts with water to produce hydrochloric acid. Suppose 2.5 kg of chlorine were added to an olympic-sized swimming pool. How many grams of calcium carbonate would be needed to neutralize
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