Problem Answer

Using the formula Efficiency = WorkOut/EnergyIn, the effieciency is 0.147. The correct percent answer is therefore 14.7. Both energy values must be expressed in the same units in the equation.


Hide Pop-up Window

Use border to drag pop-up window.

CheMagic Logo

Go CheMagic Home

Calculate Stoichiometry Expression

Calculating Heat Engine Effieciency


Get Problem Answer  |  Get New Problem  |  Go Problem Menu


Problem


What is the percent efficiency of a heat transfer engine like a steam engine that consumes 88.8 calories of heat in order to do 54.6 joules of work? Given: 4.18 J/cal

"Will you walk into my parlour?" said the Spider to the Fly,
"'Tis the prettiest little parlour that ever you did spy..."
Mary Howitt-1834