If I have 3.0 L of a 0.6 M NaBr solution, what will the concentration be if I add 7 L of water to it?

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

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?

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?