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Propane boilers are a common technology for domestic heating, and have a typical energy efficiency of 90%. The chemical formula of propane is C3H8, its lower heating value is 50,400 kJ/kg, and its carbon content by mass is 82%:
a) How many kmol of CO2 are generated by the combustion of 1 kmol of propane?
b) What are the direct CO2 emissions for 1 MJ of heat generated by a propane boiler (units: kg of CO2 per MJ of combusted propane)?
A 10m^3 tank of compressed natural gas has an absolute pressure of 400 kPa at a temperature of 27 C. What is the mass of the gas in the tank
The radioactive source in most smoke detectors is ^241Am, which has a half-life of 432 years. Suppose only about 0.130mg of this material is needed. Write down its alpha decay equation
Why were the experimental results, and the analysis of those results, important and surprising?
The electric field on the axis of a uniformly charged ring has magnitude 350kN/c at a point 6.0cm from the ring center. Find the rings charge in nC
find the velocity and position of the particle asthe moment it reaches it's maximum x coordinate.
The displacement of an object moving under uniform acceleration is some function of time and the acceleration. Suppose we write this displacement as s=ka^mt^n, where k is the dimensional constant. Show by dimensional analysis that this expression ..
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A package of dishes (mass 60.0 kilogram) sits on the flatbed of a pickup truck with an open tailgate. The truck accelerates forward on level ground. Find the maximum acceleration the truck can have therefore that the package does not slide relative..
What would be ILK's component cost of preferred stock? (Round your answer to 2 decimal places.) Cost of preferred stock
A 48 g piece of ice at 0.0 degree C is placed in an insulated calorimeter of negligible heat capacity containing 100 g of water at 100 degree C. What is the final temperature of the water once thermal equilibrium is established? Find the entropy chan..
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