Which of the following gives the correct order of boiling points?
A) C2H5OH > C3H8 > C2H5NH2
B) C2H5OH > C2H5NH2 > C3H8
C) C3H8 > C2H5OH > C2H5NH2
D) C3H8 > C2H5NH2 > C2H5OH
B
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An anoxic atmosphere was needed for life to first form on Earth
a. True b. False
Which of the following factors would decrease total fertility rates?
A) Poverty B) Social and economic security C) High infant mortality D) Rural lifestyle
Which pair of bases is linked together by two hydrogen bonds?
A) guanine and adenine B) adenine and cytosine C) guanine and thymine D) none of these
Which of the following processes produce sedimentary clasts?
A. decomposition of granite into quartz grains and clay B. fracturing of bedrock that results in angular pieces C. scouring and abrasion of bedrock along rivers D. breaking of round cobbles as they are transported E. All of these choices are correct.