8. Use the data below to ID the unknown #1. What are the X of the spectra lines? Calculate the frequency and energy of the lowest and highest (assume a photon of this light). 1 Na H Ca Hg 400 nm 500 nm 6001 nm 700 nm

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.

Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer