A mover packs books, CDs, and DVDs into a moving box. If the box contains 6.5 kg of books, 1.5 kg of CDs, and 2.0 kg of DVDs, what is the percent by mass of each object in the box? Books: % of the mass CDs: % of the mass DVDs: % of the mass

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

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?

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)