C+ O2 --> CO2 +60kJ
is the reaction exothermic or
endothermic?

the atomic mass is the bottom number on the element.

-steel jelly

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.