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1. How do you make a 2.2M NaCl solution in the amount of 340µl. The stock solution is 5.7M
2. If 25 ml of solution A is needed to make a 0.7 liters with a final concentration of 1.5%, what was the concentration percentage of the stock solution?
3. In the lab, Jose made a 2X TBE working solution in the amount of 1.0 x 10^3 ml. He remembered he started with a 10X TBE but did not write down the amount. Calculate the amount of TBE Jose used to make his working solution.
Calculate the de Broglie wavelength for each of the following. a) a proton with a velocity 95% of the speed of light. b) a 160 g ball with a velocity of 10. m/s
why is it important that none of the solid CaCl2 be included in the final distillation of 1-bromobutane?
We are investigating the keto-enol tautomerization of acetylacetone (pentane-2,4-dione) in an aqueous solutions at 25 degrees Celsius. The standard reaction Gibbs energy for the enol ketone tautomerization is -3.64 kJ/mol.
strip of magnesium reacts in 3.0 mL of 5.0 M HCl over a given period of time. Evaluate the mol mg/mol HCl ratio for the reaction.
a solution made by adding .106 mol of CH3COOH to 1.0 kg of water is found to freeze at -.203 C. Calculate the percent of the acid that has undergone ionization. The molal freezing point constant of water is 1.86
Calculate the molarity of Ag in a solution resulting from the mixing of 30 mL of a 0.0250 M AgNO3 solution and 11.51 mL of K2CrO4
0.158g of a barium halide is completely precipitated out of H2SO4 and 0.124g of barium sulfate are produced. what is the true formula of the compound.
when companies sell compressed gas in steel cylinders, they usually quote the contents as volume of gas at 1 atm pressure at tempertaure of 20 degrees celcius.
Nitric acid is not only a strong acid but also a strong oxidizing agent. In hot concentrated acid solution, the reaction with zinc is: 3 Zn(s) + 8 HNO3 ? 3 Zn(NO3)2(aq) + 2 NO(g) + 4 H2O
Initial concentration of CH3NC is 0.0340M. How many minutes does it take for the CH3NC concentration to drop to 0.0300M?
Calculate the change in enthalpy and entropy of 50 g of liquid water starting at 10 degrees Celsius and completely evaporating into H2O gas at 100 C.
Given the initial rate data for the reaction A + B ? C, determine the rate law for the reaction.
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