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2009-07-01 Chemistry (including Biochemistry) - bubbling reaction: Hi John, I'm not sure what the gas produced in Airborne is, but I assume it is the same as Alka-selzer, which is CO2 (from calcium carbonate). CO2 is less soluble in warm water than in cold water,...
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2009-06-29 Thermodynamics - House heating: Hi Thomas, It will also depend on heat losses from the home. These arise from the following areas. Ground Roof Walls Windows Water out flow Air changes. If these add up to a significant...
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2009-06-28 Thermodynamics - House heating: Hi Thomas, You are thinking entirely along the right lines. A thicker floor only delays the heat from getting to the air in the room. Under steady state conditions, provided losses to the ground are...
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2009-06-23 Chemistry (including Biochemistry) - car battery mishap: Is it contained or on the ground? If on the ground, with very heavy rubber gloves pick up the pieces and put them in a big plastic bucket or barrel and fill the barrel 2/3 full with water. Add SMALL...
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2009-06-21 Thermodynamics - Thermodynamics: Let's assume the final temperature is t. So you have 50(3.33x10^2) +50t(4.186) = 1(2.26x10^3) +1(4.186)(100-t) so t = -65C What that tells you is that the heat from 1g of steam is not enough to melt...
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