Answer:
the chemical equation of ethanol as fuel is
C2H5OH(l)+3 02(g)------2CO2(g)+3H2O(g)
the preparation process of ethanol from cassava is
cassava flour---liquification---saccharification---cooling---fermentation---distillation---ethanol
<span>Metamorphic
rock is a type of rock that the preexisting rock becomes a new rock.
Metamorphism has also different types; the Contact metamorphism and the
regional metamorphism. Contact metamorphism happens when magma is mixed with
the solid rocks in the surroundings. For example when magma is starting to form
igneous rock, it may increase that probability that it will reach the country’s
rock and that’s affected the current formation of the rock. Regional
metamorphism is also called as dynamic metamorphism. This happens when the
pressure from underground makes the rock from above move and change into new
rock formation</span>