What is the kinetic energy in kj of 1 mole of water molecules (mass=18) if the average velocity is 590 m/s (1300 mph)

= 3132.9 Joules

Explanation:

In this case;

Kinetic energy = 0.5 × 0.018 kg × 590²

                        = 3132.9 Joules

b

explanation:

mitosis

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-