How many oxygen molecules are produced when 89.5 g of mercury (II) oxide are allowed to decompose according to the following equation:
2HgO --> 2Hg + O,
2.48 x 1023 molecules
2.11 x 1023 molecules
1.24 x 1023 molecules
1.02 x 1023 molecules
6.02 x 1025 molecules

Which solution is an example of a nonelectrolyte? a. iodine in hexane b. sodium nitrate in waterc. acetic acid in waterd. hydrogen chloride in water

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?

Complete each row of the table below by filling in the missing prefix or missing exponent.