Indicate the answer choice that best completes the statement or answers the question.
24. A gas particle of mass 5.31 10^-23kg has a velocity of 1.00 x10^2 m/s. What is the kinetic energy of the molecule?
a. 5.31 x 10^21kg m²/s2 b.5.31 x 10^19kg m2/s2
c.2.65 10^19kg m2/s2 d. 10.6 10^-19kg m2/s2

a chemical reaction

explanation:

  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-

he would use the colour black

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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