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Home >All Categories > Science & Mathematics >Chemistry >Open Question little Member since:September 14, 2010Total points:39 (Level 1)a. write the Keq expression
b. Calculate Keq if the concentration of N2 is [0.2 M], the concentration of O2 is [0.75M] and the concentration of NO2 is [0.5 M]Answer Question

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Home >All Categories > Science & Mathematics >Chemistry >Open Question Alicia Member since:September 19, 2010Total points:46 (Level 1)Some inexpensive humidity detection systems consist of a piece of paper saturated with Na2CoCl4 that changes color in dry or humid air. What color is the piece of paper in dry air? What color is the piece of paper in humid air? Justify your answer with an explanation.Answer Question

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A cylinder weighing 400 lb is held against a smooth incline by means of the weightless rod AB. Determine the forces P and N exerted on the cylinder by the rod and the incline respectively.

here's the diagram: http://i56.tinypic.com/2h4mgiu.jpg

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When you go to sleep each night in the comfort of your overstuffed mattress. Do you fall out of bed or through the mattress? Nope. In fact you just lie there like a lump of coal. That's static equilibrium.

It's static because you're not moving; lumps of coal rarely do. It's equilibrium because you are not accelerating; so all the forces acting on your tired old body add up to zero...in math talk F = SUM(f) = ma = 0 where m is your mass (put on a little weight have we?).

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Home >All Categories > Science & Mathematics >Physics >Open Question J Member since:March 09, 2011Total points:83 (Level 1)Heat is transferred at constant pressure until the temperature reaches 350 degrees C.
a) what is the intial temperature of the water?
b) determine the total mass of water?
c) calculate the final volume?
d) show the process on a p-v diagram with respect to saturation lines?Answer Question

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