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(a) A voltaic cell is constructed with all reactants and products in their standard states Will this condition hold as the cell operates? Explain.
(b) Can the Nernst equation be used at temperatures other than room temperature? Explain.
(c) What happens to the emf of a cell if the concentrations of the products are increased?
A 26.0-g sample of ice at -11.0°C is mixed with 123.0 g of water at 90.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
How much heat (in kJ) is needed to convert 866 g of ice at -10 degress celsius to steam at 126 degrees Celsius? (The specific heats of ice and steam are 2.03 and 1.99 J/g x respectively)
if 0.75 moles of cao was reacted in the above reaction and all the heat was used to heat an amount of lead from 20.5 c
Explain how the transition from the enamine intermediate to the imine intermediate in the Fischer indole synthesis of 2-phenylindole
Problem- Calculate the energy emitted due to an electron transition from n=5 to n=3. Is energy required or lost? Once you calculate the energy, calculate the frequency and wavelength (in nanometers). Where on the electromagnetic spectrum does the ..
What mass of sodium cyanide must be added to 250ml of water in order to obtain a solution having a pH of 10.50? Ka(HCN) = 4.9 x 10 ^-10
10.0ml of 0.10M Pb(NO3)2 is mixed with 10.0ml NaCl. After equilibrium is attained, it is determined that the concentration of Cl- in solution is 0.0218M. Calculate the Ksp of PbCl2.
The addition of H2 to C=C double bonds is an important reaction used in the presentation of margarine from vegetable oils. If 50.0ml of H2 and 50.0ml of ethylene (C2H4) are allowed to react at 1.5atm, the product ethane (C2H6) has a volume of 50.0..
A 50 mL volume of the solution with an initial pH of 6.5 was titrated with 0.01 M HCl and after the addition of 9.8 mL of titrant, the solution pH was 4.8. Find the concentrations of the acetate and phosphate species that were present in the initi..
Carbon and silicon belong to the same group and are known to have similar properties. Do you think that silicon can replace the role that carbon
Question- Calibration of a glass electrode gave a reading of 126.7 mV with saturated potassium hydrogen tartrate buffer standard (pH = 3.557) and a reading of -202.4 mV with 0.01 m borax buffer standard (pH = 9.139), both measured at 30°C.
What is the enthalpy of combustion of this fuel in kJ/mol? The specific heat capacity of water is 4.184 J/g-°C.
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