- A common chemical sedimentary rock is ?

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Chemistry question?? How much heat energy does it take to make a sample of liquid nitrogen vaporize? A fair die is to be rolled 20 times.
Find the expected value and standard deviation of the # of times?
(a) 6 appears
b) 5 or 6 appears.? Is a microwave an example of a electrical to thermal energy transfer? If so, why? How can I graph y=f(x)+k if fx=x^2 and k=4. how does it shifts? If your DR. tells you that all blood pressure pills have side effects then WHY do they prescribe them ?