How many grams of a 25.1% potassium sulfate solution would contain 1.4 mol potassium sulfate?
Answer in units of g.

explanation too please!

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?

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions.what elemental classification does oxygen belongto? done

Ab c or d ? i’m not sure what the answer is