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edalbert edalbert
wrote...
13 years ago
Hi there,

Ive been having difficulties in trying to understand when someone says "kilocalorie per mole" I know that the term is use to express bond strengths, but let's say someone says a statement "covalent bonds have an energy of roughly 80 kilocalories per mole" Could some one simplify this please. So it takes 80 kilocalories (80,000 calories)  to break 6.022 x 10^23 covalent bonds? Thank you
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#1
Educator
13 years ago
Hey,

"Kilocalorie per mole" is a derived unit of energy per Avogadro’s number of particles, where energy is measured in units of 1000 (thermochemical) small calories. In SI units, it is equal to 4.184 kiloJoules/mol, or 6.9477 × 10?21 Joules per molecule. This unit is usually used in America (guessing your from the states). I've never used it in Canada Face with Stuck-out Tongue. If it makes you understand more, convert it using the equivalent values stated.

Bio_man 8)
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