The accompanying diagram represents an electro-chemical cell. V Salt bridge Zn- Cu Zn2+(aq) 1.0 M Cu2+(aq) 1.0 M What occurs when the switch is closed?​

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 statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

Which statement best describes isomers? a. isomers are alcohols that have the same functional group. b. isomers have at least one carbon-carbon double bond. c. isomers have the same molecular formula but different structural properties.