4 NH3+ 7O2 --> 4NO2+6H2O How many grams of O2 are needed to produce 1.26 x 1028 molecules of H2O?
no idea how to do this, really need to get it done :(

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

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?

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?