(1.21 x 10^-3 + 1.3 x 10^-3) x 6.453 x 10^2 =

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 describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide