1.
A chemical process used to produce ethanol as a fuel additive was expec
produce 5,000 kilograms of ethanol based on the amounts of starting mater
used, but only 4,760 kilograms were produced. What was the percent vield for
ethanol in this process?
A
1.09%
4.80%
95.2%
105%

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step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.