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In another experiment a student makes a voltaic cell using zinc solid metal, zinc sulfate, copper solid metal and copper sulfate, and of course a salt bridge filled with KCl. What voltage would you expect from this cell at room temperature and 1M ZnSO4 solution but 0.01M CuSO4 solution?
1. 0.9816 volts
2. 1.10 volts
3. 1.1592 volts
4. 1.0623 volts
5. 1.0408 volts
What is the potential of a galvanic cell made up of Zn/Zn^2+ and Cu/Cu^2+ half-cells at 25 C if [Zn^2+] = 0.25M and [Cu^2+] = 0.15M?
calculate the mass of vapour present in a room of volume 250 meter cube that contains air at 23 degree centigrade on a day when the relative humidity is 53 per cent.
vinegar is a 5.0% solution by weight of acetic acid (CH3CO2H)in water. given that the ph for acetic acid is 2.41, the ka=1.8X10-5 and assuming the density of vinegar to be 1.00g/cm3, what is the percent dissociation for acetic acid in vinegar?
A ground-state H atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energy level. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and a second to return to the ground state.
The vapor pressure of a liquid chloroform, CHCl3, is 400.0 torr at 24.1 c and 100.0 torr at -6.3C , what is Hvap of chloroform
An aerosol can has a gas pressure of 144 kPa at 293 K. Calculate the pressure when the can is heated to 425 K.
what would be two examples of reductive alkylation of N-methylbenzylamine and formaldehyde
If the mass of NaCl is 11.69 g. What would be the number of moles of all solutes (including cations and anions)
How will the melting point of your semicarbazone derivative be affected if the derivative is not dry enough
A 1.500-g sample of a mixture containing only Cu2O and CuO was treated with hydrogen gas to produce 1.276 g pure copper metal. Calculate the percent composition by mass of the mixture.
Ascorbic acid (Vitamin C, H2C6H6O6) is a diprotic acid. In a laboratory exercise, a vitamin C tablet was analyzed by titration using 0.125 M NaOH(aq). On the average, it required 29.5 mL of the base to neutralize the acid in the one tablet. How ma..
A solution is 40.0% by volume benzene (C6H6) in carbon tetrachloride at 20C. The vapor pressure of pure benzene at this temperature is 74.61 mmHg and its density is 0.87865 g/cm3
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