Recent content by Speedy

How many pounds of western subbituminous coal would be needed to heat the house (house requires 1,000,000 BTU), with a 60% efficient furnace? Subitiminous coal = 10,750 BTU/lb 1,000,000 BTU ____________ = 93.02 lb of coal. 10,750 Btu/lb And I am not exactly sure how...

"Assume that the population of the U.S. increases by 1%/yr. How many BTU of energy will have to be added to the national annual energy budget this year to maintain the same per capita expenditure?" The current populations is listed as 291 million. And the current per capita energy...

Sorry, that was a typo, it should read like you said. Okay, now I got it. I think I punched it in wrong with the calculator. Thanks!

Hey, I am working on some problems dealing with calorimetry. The problem I am stuck on is: What is the final temperature when a 3.0 kg gold bar at 99 degrees C is dropped into a 0.22 kg of water at 25 degrees C. The equation I am working with is: cx,mx,(Tf-Tix) = cy,my,(Tf-Tiy) It seems like...