Biofuels

Biogas

formed from anaerobic digestion of organic matter

CH₄

organic waste undergo anaerobic digestion to produce CH₄ and H₂O

Bioethanol

glucose undergo anaerobic respiration to produce ethanol and CO₂

Biodiesel

triglyceride from animal fat/plant oil and methanol

make glycerol and fatty acid ester biodiesel

Biofuel conflict

Resources for biofuel take away resources for rood production

∆Hc equation

e / n

energy content equation

e / ∆ mass

calibration factor equation

e / ∆ temp

electrical electricity equation CF

e = v x amps x seconds

e/ ∆ temp

chemical energy

e = n x ∆ H c

e / ∆ temp

energy

CF x ∆ temp

How to find excess and limiting reactant

in the equation

find the mols of the chemicals

divide the mols by coefficient

less number is the limiting reactant and bigger number is in excess

in stoichiometry, use the limiting reactant

energy from food

grams times data book

why is energy available to body less than the energy content

incomplete digestion as not all food is absorbed

some nutrients such as cellulose do not have enzymes in the human body to be broken down by