If a sample of water had a mass of 100g and the final solution has a mass of 120 g how much solute dissolved into the water

What’s a special glass that most beakers are made of

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?

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.