Balance the following reaction: NH3 -> N2 + H2

A
3,2,1 decomposition
B
3,2,1 synthesis
C
2,1,3 decomposition
D
2,1,3 synthesis

Cobalt-60 is an artificial radioisotope that is produced in a nuclear reactor and is used as a gamma-ray source in the treatment of certain types of cancer. if the wavelength of the gamma radiation from a cobalt-60 source is 1.00 × 10-3 nm, calculate the energy of a photon of this radiation.

Why do sodium and neon have vastly different chemical and physical properties despite having similar atomic masses?

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than