Methyl acetate is isomeric with which of the following compounds?
A) ethyl formate
B) propanoic acid
C) both a and b
D) neither a nor b
C
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The point of origin of an earthquake at depth is called _____.
a.) a foreshock b.) the epicenter c.) the focus d.) an aftershock e.) the fixed point
Sea levels at the New York tide gage have varied greatly from year to year because of
A) weather conditions. B) rising and falling of local land forms. C) melting and freezing of arctic ice. D) changes in tides due to the gravity of other planets.
Which of the following is the cycle which utilizes lactate as the starting material for gluconeogenesis?
A) the Calvin cycle B) the citric acid cycle C) the Cori cycle D) the Krebs cycle
Biological processes have removed most of the ________ from the Earth's atmosphere.
A. hydrogen B. nitrogen C. carbon dioxide D. argon E. oxygen