How many mL of 1.50 M hydrochloric acid will neutralize 25 mL of 2.00 sodium hydroxide?

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?

An is a pure substance that can’t be broken down into simpler substances by chemical or physical means

What is the solution to the problem to the correct number of significant figures (102,900/12)+(170•1.27)