Unbranched hydrocarbons are also called straight chain hydrocarbons. Which of the following is true of unbranched hydrocarbons?
A) The C-C-C angle is 180°.
B) No carbon atom is connected to more than two other carbon atoms.
C) both a and b
D) neither a nor b
B
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A) nuclear power B) coal C) natural gas D) wind E) solar
The specific heat of iron is 0.11 cal /g·°C. What will be the final temperature if 275 calories are added to a 75.0 piece of iron initially at 25°C?
A) 33°C B) 36°C C) 58°C D) none of these
Which of the following best matches the description?An environmental condition, the absence of which, prevents the success of an organism.
A. limiting factor B. interspecific competition C. intraspecific competition D. trophic level E. biomass F. producer G. herbivore H. omnivore I. denitrifying bacteria J. nitrogen cycle K. community L. carbon cycle M. habitat N. secondary consumer O. nitrogen-fixing bacteria P. ectoparasite
The geographic location of the magnetic North Pole has varied over geologic time.
Answer the following statement true (T) or false (F)