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Calculate delta G in Joules/mol at 25 C when concentration of [H] is .00000010 M and [OH] is 1.0 x 10^-11.
Determine whether the solution formed from the following salts will be acidic, basic or neutral. Write equations for hydrolysis.
The jewelry contains only gold and silver, which have densities of 19.3 and 10.5 , respectively. If the total volume of the jewelry is the sum of the volumes of the gold and silver that it contains, calculate the percentage of gold (by mass) in th..
Analysis of a commercial chewing gum gave results of 0.295 mg/g of BHA. To evaluate the accuracy of their results, they performed 5 spike recoveries, adding an amount of BHA equivalent to 0.181 mg/g to each sample.
A solution contains 2.0×10-4 M Ag+ and 3.6×10-2 M CO32-. Determine Qsp for Ag2CO3. Will Ag2CO3(s) precipitate? [Ksp for Ag2CO3 is 8.1×10-12]
The balloon ascends to altitude of 1600 meters and its volume increased to 6.00 L. Assuming that the temp of the gas didnt change during the ascent, calculate the atmospheric pressure at 1600 meters in mmHg.
Describe how you would make 500 mL of 0.150 M Na2SO4 given 1 kg of Na2SO4, a distilled water supply, a balance, anf a 500-mL volumetric flask.
A chemist produces 460 mL of oxygen gas at - 43 °C and constant pressure. To what Celsius temperature must the oxygen be warmed in order for it to have a volume of 600 mL?
What is the molar concentration of Br^- ions in a 0.235 M aqueous solution of FeBr3, assuming complete dissociation?
A certain sunstance, intially present at 0.0800 M, decomposes by zero-order kinetic with a rate constant of 2.50 x 10-2 mol/l s. Calculate the time (in seconds) required for the system to reach a concentration of 0.0630
5.0 g of H2O at 23.0 oC is added to 100.0 g of H2O at 67.5 oC. What is the temperature of the resulting mixture
The enthalpy of formation of methanethiol CH3SH (g) is -22.9 KJ/mol. Methanethiol can be synthesized by the reaction of gaseous methanol and H2S. Water vapor is another product.
Proper procedure for the preparation and standardization of ~300 mL of ~1 M NaOH solution against potassium hydrogen phthalate i.e., this is an acid/base titration, It is desirable for the acid and base
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