To make a saturated solution, 30 g of sodium chloride is dissolved in 100 g of water at 293 K. Find its concentration at this temperature.

Can someone me with questions 15 to 17 plz.

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new 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?