Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction: P4(g) + 10 Cl2(g) → 4 PCl5(s) ΔH°rxn = ?

Given:

PCl5(s) → PCl3(g) + Cl2(g) ΔH°rxn = +157 kJ

P4(g) + 6 Cl2(g) → 4 PCl3(g) ΔH°rxn = -1207 kJ

Type the letter that represents the correct location for each particle type below.

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?

How have the greenhouse gasses increased from the year 2000 to 2018