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If magnesium oxide smoke has been lost in too great an amount during the heating of the crucible would this have made the calculation % Mg in the product too high or too low? Explain.
Phosgene decomposes by the reaction COCL(g) CO(g) + Cl2 K2=8.3x10^-4 (at 360C) When 5.00 mol of COCL2(g) are placed in a 10.0 L flask, find the quilibrium concentration of COCL2, CO and CL2 using the follow steps
What is the bubble-point temperature of the solution. What are the mole fractions of ethanol (e) and water (w) in the vapor phase at the bubble-point temperature
The work performed by a system against the atmospheric pressure to which it is kept open during an experiment in the lab is equal to.
A system had 150 kJ of work done on it and its internal energy increased by 60 kJ. How much energy did the system gain or lose as heat?
Stripping voltammetry is a trace electrochemical technique in which the current is linearly proportional to concentration. A solution of 1.0x10-7 M Pb(II) gave a current of 0.139 mA.
At 25ºC the solubility product constant, Ksp, for magnesium phosphate, Mg3(PO4)2, is 1.0´10-24. The solubility product constant for magnesium fluoride, MgF2, is 7.0´10-11.
calculate the standard enthalpy change for this reaction using standard enthalpies of formation. general chemistry 10th edition ebbing and gammon
He intends to have the pH set to 10.0 . He uses acetic acid /acetate as the buffer system. Is the oH buffered in the desired range. How would you improve on Joe experiment design
Consider a solution of carbonic acid, H2CO3. (a) Calculate the H3O+ ion concentration of a 0.15 M solution of carbonic acid.
At 25 degrees celsius how many dissociated H+ ions are in 167 mL of an aqueous sloution whose ph=12.07? hint find concentration of H+
portion of the stock solution and dilute it to a total volume of 0.550L what will be the concentration of the final solution?
Which pair of solutions should conduct electrical current equally well because they contain equal numbers of ions? 0.10 M NH3 and 0.10 M NH4Cl 0.10 M HBr and 0.10 M HF 0.10 M NaCl and 0.10 M Na2SO4 0.10 M NaNO3 and 0.10 M HNO3 0.10 M HNO3 and 0.10..
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