Explain how many moles of gas are present
How many moles of gas are present when the pressure is 750mm Hg, the volume is 18,600 Ml, and the temperature is 25C?
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Write an equation that using the variable t to represent the time it takes to paint the room together that can be used to solve the problem.
Diamonds have successfully been prepared by submitting graphite tohigh pressure. Calculate the approximate minimum pressure needed using ΔfG=0 for graphite andΔfG=2.90 x 103 J/mol for diamond.
The distance x traveled by a motorboat in t seconds after the engine is cut off is given by x=k-1ln (kv0t+1), where v0 is the velocity of the boat at the time the engine is cut and k is constant.
Find the hydrogen-ion concentration. (If pH < 7, the solution is acid. If pH > 7, the solution is basic.) Acid rain has a pH between 4 and 5, and normal rain is slightly acidic with a pH of about 5.6.
Studies have shown that the concentration (in mg/cm3 of blood) of aspirin in a typical person is related to the time t (in h ) after the aspirin reaches maximum concentration by the equation ln c = ln 14-0.32t.
Various members of a class of compounds, alkenes (Chapter11), react with hydrogen to produce a corresponding alkane. Termed hydrogenation, this type of reaction is used to produce products such as margarine.
A certain type of optical switch in a fiber-optic system allows a light signal to continue in one of two fibers. How many possible paths could a light signal follow if it passes through 600 such switches?
Determine the diameter of the pupils of his eyes that would be required for him to be able to resolve the squirrels as separate objects. In this calculation use a wavelength of 498 nm (in vacuum) for the light.
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