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Zinc metal is added to hydrochloric acid to generate hydrogen gas as well as is collected over a liquid whose vapor pressure is the same as pure water at 20.0 C (18 torr). The volume of the mixture is 1.7 L and its total pressure is 0.810atm.Find out the partial pressure of the hydrogen gas in this mixture. 562torr 580torr 598torr 616torr 634torr
A .10M solution of the weak acid HCN has an equilibrium constant of 4.9 X 10^-10. Calculate the percent dissociation of the acid
When 0.78 g of an unknown gas in contained solely in a 560 mL container, the pressure is 780 Torr at 5 degrees Celcius. What is the molar mass of the gas in grams/mole?
slower than Friedel-Crafts alkylation of benzene and gives a mixture containing mostly o- and p-tert-butyltoluene. d. slower than Friedel-Crafts alkylation of benzene and gives mostly m-tert-butyltoluene.
The volume of 0.162 mol of helium gas at 30.1 C is increased isothermally from 2.27 L to 5.43 L. Assuming the gas to be ideal, calculate the entropy change (J/K) for the process.
Averge frequency of light emitted a 100 w lightbulb is 5.5x10^14 Hz. How many photons per second does the light bulb emit?
The mass spectrum of an organic compound shows the relative abundances of M to be 85.12% and M+1 to be 0.9206%. Assuming the peaks are caused by C-12 and C-13 isotopes
What volume of ether would be required to extract 0.95 g of aspirin from a solution of 1.0 g of aspirin in 100 mL of water in a single extraction
The gas is heated to 520.0 K at a constant volume corresponding to the initial volume c) The gas undergoes a reversible isothermal expansion at 290.0 K until the pressure is half of its initial value
isotope 1 has a mass of 120.9038 rm amu and a relative abundance of 57.4 and isotope 2 has a mass of 122.9041 rm amu.
What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was first diluted with 100 mL of water
protein a has a binding site for glucose with a kd of 10-5m.protein b has a binding site for glucose with a kd of 10-7
How much heat is liberated at constant pressure if 0.834 g of calcium carbonate reacts with 48.9 mL of 0.668 M hydrochloric acid? CaCO3(s) + 2HCl(aq) > CaCl2(aq) + H2O(l) + CO2(g); DeltaH = -15.2 kJ
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