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The value of Eo for the following reaction is 0.63V. What will the cell potential be when the [Zn2+] = 0.00020M and the [Pb2+] = 1.0M?
Pb2+(aq) + Zn(s) --> Pb(s) + Zn2+(aq)
0.52V0.85V0.41V0.74V0.63V
The mean velocities of HCl gas and NH3 gas at 25 degrees Celsius are 450m/s and 660m/s respectively. With these speeds in mind, briefly explain why so much time was required for the HCl and NH3 to meet in the glass tube
For 2.25 moles of an ideal gas, Pext=P=200x10^3 Pa. The temperature is changed from 122 C to 28.5C and Cv=3R/2. Calculate the q, w, delta U and delta H for an isochloric process.
Determine the standard enthalpy change of the following explosive reaction by using the apprpriate enthalpies of formation
Solid carbon dioxide, CO2, (dry ice) goes directly from solid to gaseous state at -78°C. The molar heat of sublimation is 25. 2 kJ/mol.
8.0 moles of CO2 and 9.0 moles of H2O are places in a 5.0L vessel. When equilibrium is established, [C2H4]=0.45 M. Calculate Keq
How many grams of the K2C2O4 X H2O in the salt mixture remain unreacted (in excess)? f. what is the percent by mass of each salt in the mixture
A compound contains only carbon, hydrogen, and oxygen. Combustion of 138.7 g of the compound yields 203.3 g of CO2 and 83.23 g of H2O.
when 15.12 ml of 0.1194 M NaOH is added to 25 ml of 0.1264 M HX(an unnknown weak acid),the resulting pH is 5.9 . what is the ka of the unknown acid
Reaction rate laws are frequently used to investigate reaction mechanisms. Would your results to this experiment be consistent with either or both of the following mechanisms?
CaCO3(s) + 2 HCl(aq) -> CaCl2(aq) + H2O(l) + CO2(g) How many mol CaCO3 can be dissolved in 0.0575 mol HCl?
The solvolysis product of 1-bromo-2,2-dimethylbutane with ethanol initially forms the expected carbocation but does not give any of the expected 1-ethoxy-2,2-dimethylbutane. Draw the rearranged cation that will eventually lead to the product.
Write a reaction mechanism for the adol condensation reaction betweeen p-anisaldehyde
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