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What is the rate constant of a first-order reaction that takes 9.00 minutes for the reactant concentration to drop to half of its initial value?
calculate the ph of buffer solution made from .20 M HC2H3O2 and .050 M C2H3O2 that has an acid dissociation constant for HC2H3O2 of 1.8*10-5.
Suggest a chemical test that would allow you to distinguish between tert-butyl alcohol and 1 butanol, both of which give a positive ceric nitrate test?
Calculate the volume in liters of a 0.133mol/L copper (II) sulfate solution that contains 150.g of copper (II) sulfate (CuSO4).
what is the purpose of anhydrous CaCl2? Why it is important that none of the solid CaCl2 be included in the final distillation of your 1-bromobutane?
volumetric flask and this solution becomes quite warm, but after it is permitted to return to room temperature, H 2 O is combined to total 500 mili litres of solution. Compute the pH of the final solution. ?
Calculate the amount of heat liberated (in kJ) from 399 g of mercury when it cools from 73.0°C to 12.0°C.
barium metal crystallizes in a body-centered cubic lattic. The unit cell edge length is 502 pm, and the density of the metal is 3.50 g/cm3. Using this information.
What is the final concentration of Na+ after adding 230 ml of water to a stock solution of 2.5M 420.0 ml Trisodium phosphate?
a 35.00 mL sample of NaOH solution is titrated to an endpoint of 14.76 mL 0.4122 M HBr solution. What is the molarity pf the NaOH solution?
Calculate the partial pressure (in atmospheres) of each gas, Assuming that the total pressure of the gases is 1.34atm{rm atm} and that their mole ratio is 94 : 4.0 : 1.5 : 0.50,
a solution consisting of isobutyl bromide and isobutyl chloride is found to have a refractive index of 1.3931 at 20 degrees celsius. The refractive indices at 20 degrees celsius of isobutyl bromide and isobutyl chloride are 1.4368 and 1.3785
calculate the pH of 50 ml of .15 M HCHO2 with 75 mL of .13 M NaCHO2
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