Sample of Substance X
Change 1
Change 2
Change 3
Change 1 is:
impossible
a physical change
a chemical change
Change 2 is:
impossible
O a physical change
a chemical change
Change 3 is:
impossible
a physical change
O a chemical change

0.09 moles of sodium sulfate in 12 ml of solution

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?

Which of the following is the correct formula for copper (i) sulfate trihydrate? cuso4 · 3h2o cuso4(h2o)3 cu2so4(h2o)3 cu2so4 · 3h2o