How much heat is required to convert 6.78 g of ice at -12.0°C to water at 30.0 °C? (The heat capacity of ice is 2.09 J/(g. °C). A Hyap (H20) - 40.7 kJ/mol, and AH(H2O) = 6.02 kJ/mol )
Express your answer with the appropriate units.
НА
?
9
Value
Units

answer: your mm

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-

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.