Disolvemos 4,5 kilogramos de amoniaco NH3 en 500ml de agua calcula porcentaje de la disolución 90%p/v 0,9%v/v
90%p/p

What is the overall order of reaction for rate = k[no]2[o2]

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

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?