Find total amount of heat needed in constant-volume process
10kg of nitrogen is heated from 20 degrees celcius to 250 degrees celcius. Determine the total amount of heat required when this is done in (a) a constant-volume process and (b) an isobaric process.
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Two converging lensees, the first with focal length 25 cm and second with the focal length 20 cm, are separated by 30 cm. A 4 cm tall object is placed 50 cm infront of the first lens. What is the height of the final image?
The diffusion coefficient is 6.9x10^-11 m^2/s. What is the diffusion flux from the surface into the plate? Assume a linear concentration profile within the plate.
There was no reaction between lead(II) sulfate solution (PbSO4) and Cu metal, but there was a reaction between PbSO4 solution and Zn metal.
A 47 resistor can dissipate up to 0.27 W of power without burning up. What is the smallest number of such resistors that can be connected in series across a 9.0 V battery without any one of them burning up?
Would a reaction occur if a piece of Sn metal were placed in a ZnSO4 solution? Briefly explain your answer. Write a net ionic equation if a reaction does occur.
Four cards are selected, one at a time from a standard deck of 52 cards. Let x represent the number of aces drawn in a set of 4 cards. If this experiment is completed without replacement, explain why x is not a binomial random variable.
An object that is 31 cm in front of a convex mirror has an image located 19 cm behind the mirror. How far behind the mirror is the image located when the object is 19 cm in front of the mirror?
A two-phase liquid-vapor of water has a temperature of 300 ºC and a quality of 75%. The mixture occupies a volume of 0.05 m3. Determine the masses of saturated liquid and vapor present, in kg.
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Staying with Nigeria, rewind the year to 1950. Using the +5 year control, fast forward in 5 year increments until you reach 2020.
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