Which of the following is not a correct IUPAC name for an alkene?
A) 2-methyl-1-butene
B) 2-methyl-2-butene
C) 3-methyl-1-butene
D) None, these are all correct IUPAC names.
D
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Why are there greater variations in temperatures between summer and winter over continental interiors versus coastal regions?
The occurrence of a halo tells you that
A) the ice crystals are columnar in shape and are horizontally-oriented as they fall. B) the ice crystals are platelike in shape and are horizontally-oriented as they fall. C) the ice crystals are columnar in shape and are tumbling while they fall. D) the ice crystals are platelike in shape and are tumbling while they fall.
The scientific method is
A. limited in when it can be used. B. impartial. C. reliable. D. All of these are correct.
In a particular chemical reaction 2 bonds are broken and no bonds are formed. Based only on this information, which of the following is true?
A) The reaction has a high activation energy. B) The reaction is endothermic. C) The reaction is exothermic. D) We cannot determine which of the above is true.