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A. Each group will need ~7 solutions where a single BCG Bromocresol Green concentration exists (~2 x 10-5 M) with different concentrations of NaCl (0.02M-0.2M). Compute the preparation scheme to prepare these solutions using the subsequent concentrations specified for NaCl. 0; 0.002; 0.004; 0.006: 0.008; 0.01; 0.03; 0.05; 0.08; 0.1; 0.2M
B. Explain what would be the ionic strength for these solutions?
What is the new freezing point of a solution with 100.g of CaCl2 in every kg of water? The Kf of water is 1.86 degrees celsius/m. Solve the problem.
Compute the total change in Enthalpy (delta H) if you heat 25 grams of mercury liquid from 25 degrees Celsius to 75 degrees Celsius as well as also increase the pressure from 1 bar to 75 kbar
At this temperature, the vapour pressure of H2O is 31.82 torr. What volume increase is necessary for all of the water to evaporate?
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted
Which group contains elements most likely to form covalently-bonded molecules?
Calculate the steric strain for the most stable chair conformer and for a less stable conformer for the following: a) trans-1-ethyl-3-fluorocyclohexane
Predict whether each of the following solvents is miscible or immiscible with hexane,C6H14. 1.) formic acid, HCOOH immiscible or miscible 3.) methyl ethyl ketone, C4H8O immiscible or miscible 2.) methanol CH3OH immiscible or miscible 4.) chlorofor..
A titration is performed on 1.3245g of a sample of a diprotic acid that is dissolved in 50 ml of water. if 44.10 ml of .6124 M NaOH is required to reach the end-point, what is the molecular weight of the diprotic acid
Calculate the ph when 47.0 mL of 0.309 M of a certain monoprotic weak acid, HA, is mixted with 47.0 mL of 0.309 M of sodium hydroxide solution
describe in brief the risk connected with solutions of 1m nh3 1m hcl and 1m naoh?external pressure of 13.0 atm had by
A plastic cup is heated past its melting point,then remolded and cooled. Based on thisinformation, we can say this polymer
A helium-filled weather balloon has a volume of 2.4 × 102 L at 99 kPa pressure and a temperature of 0°C. What is the mass of the helium in the balloon?
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