What is the mass of a cube of aluminum that is 4.0 cm on each edge? the density of aluminum is 2.7 g/cm3.

How many miles of water are produced if 5.43 mol pbo2 are consumed

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

Why must humans find substitutes for many minerals found on earth? (a) form at an extremely slow rate (b) controlled by other countries (c) too deep in the earth to collect