Which statement is true about the number of neutrons in atoms, except for 1 point helium-3 and hydrogen-1? *
The number of neutrons is always equal to or greater than the number of protons.
The number of neutrons is always equal to the number of protons.
The number of neutrons is always less than or equal to the number of electrons.
The number of neutrons is always less than the number of protons in an atom.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

the answer is barium and copper bromide