List of Materials 1 piece of tarnished silver 1 large pot or bowl 1 or 2 pieces of aluminum foil (to cover the bottom of the pan or dish) Several cups of water to fill the pot or bowl 1 pot to heat the water in 1 pair of kitchen oven mitts (to handle the hot water dish) 1 to 2 boxes of baking soda (estimate about 1 cup per gallon of water)1.Write down the chemical equation for this reversible reactionWhat are the two half-reactions involved in this lab? 3Ag2S(s) + 2Al(s)+ 3H2O(l) gt; 6Ag(s) + Al2O3(s) + 3H2S(aq)got 1 but not 2.Was heat energy lost or gained in this chemical reaction? (Hint: Calculate Eo for the half-reactions in question 1)3.What occurred when the reaction stopped? when the removal has stopped, the reaction has reached equilibriumAnd silver is being plated out just as fast as it's being tarnished.6.What served as the catalyst in this experiment?7.What are some other objects that work through the use of electrochemical cells?
Insulation does not use energy it conserves itOnly things that use energy would be energy efficientInsulation is measured in its resistance to heat passing throughFiberglass insulation has a lower R value than some of the rigid foam insulationsSome of the foam insulations are water resistant If the cabin in in the woods solar energy will not be of much use to you to generate electricityYour simplest solution is a generator, but it may be too noisyYou might get enough power to a solar panel to power your computer and work around other electrical needs For washing clothes you can soak them and then hand wash themThere is a hand washing machine that does a reasonably good job For lights you can use candles, or kerosene lamps For purifying water you could use any number of solutionsOne of the lowest cost with a large supply would be a slow sand filter For immediate needs start at a local camping supply store.
It is government subsidized housing where taxpayers pick up part of the rent tab so people who are economically disadvantaged (we used to call them poor people) can afford to live thereBetter that than homelessnessThe housing itself is not low cost per seIt is subsidized so that rents are made artificially low for renters.
In addition to what mikes saying, you may get fringe benefits by using incandescent lighting, as they do produce over 90% heat and produce light, albeit inefficacy.
Too many questions there.
