1 . heat flow away from the emitting object by means of electromagnetic waves, mostly in the infrared region compressor 2 . the quantity of energy that a given mass of substance must absorb to increase its temperature by a specific amount convection 3 . heat flow due to the mass motion of a fluid entropy 4 . any material that reduces heat flow insulation 5 . a standardized measure of the ability to insulate R-value 6 . a pump that increases the pressure of a gas radiation 7 . a measure of disorder specific heat capacity

i need mutiple choices

  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-