Recent content by amme636

Homework Statement A student allowed a 0.500 gram sample of styrene to react with an excess of bromine.* An unknown product with a mass of 1.27 grams was obtained.**The student repeated the experiment several times and always obtained the same result.**What is the likely molecular formula of...

So, is it just r=h/2 and V=(1/3)pi (h/2)^2 h, which is (pi h^3)/12? Than V'(dh/dt) would be dV/dt right? or am I missing something still?

Homework Statement A conical reservoir has a depth of 24 ft and a circular top of radius 12 ft. It is being filled so that the depth of the water is increasing at a constant rate of 4ft/hour. Determine the rate of which the water is entering the reservoir when the depth is 5 ft. Homework...

Homework Statement Electron and positron each have a kinetic energy of 220 keV even when far apart. Homework Equations The Attempt at a Solution I have no idea. My book says the answer 1.46 MeV, 8.49 x 10^-13 m but I don't know how to get that.