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A voltaic cell utilizes the following reaction and operates at 298 K:
3Ce4+(aq)+Cr(s)→3Ce3+(aq)+Cr3+(aq).
What is the emf of this cell when [Ce4+]= 2.5 M , [Ce3+]= 1.9×10-2 M , and [Cr3+]= 1.1×10-2 M?
What is the emf of this cell when [Ce4+]= .39 M , [Ce3+]= .77 M , and [Cr3+]= 1.3 M?
What other interesting patterns do you notice in the periodic table? What can you predict about the properties of elements in columns 1A, 2A, 6A, and 7A?
Explain in detail why molecules that have significant numbers of polar covalent bonds are more likely to interact with water
vaporization of water into air in a wetted-wall column the following data were obtained tube diameter 1.46 cm
Assume that a particular reaction evolves 241 {rm kJ} of heat and that 33 {rm kJ} of PV work is gained by the system.
A velocity vector 30degrees to the right of the positive y axis has a y component of 10m/s. What is the value of it's x component?
if a molecule of no diffuses a distance of 0.778 m from a point source calculate the distance m that a molecule of he
determine the mass of the lead in grams if the water level in a graduated cylinder initially at 224 ml rises to 274 ml
Assume that you used a 0.560 g piece of pure aluminum in the synthesis of alum and collected 5.255 g of dry alum. What is your percent yield of alum
The alpha-particles ionize molecules in the air, allowing it to conduct an electric current. When smoke particles enter, the conductivity of the air changes and the alarm buzzes. (a) Write the equation for the decay of (mass number 241, protons 95..
A loudspeaker has an output of 80 dB. If the volume of the sound is turned up so that the output intensity is 10,000 times greater, what is the new sound intensity level?
A newly developed substance that emits 315 W of photons with a wavelength of 275 nm is mounted in a small rocket such that all of the radiation is released in the same direction.
A 111.2mL sample of 0.110 M methylamine CH3NH2, Kb = 3.7*10-4) is titrated with 0.255 M HNO3. Compute the pH after the addition of each of the subsequent volumes of acid.
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