The perfect pesticide should have a short half-life.
Answer the following statement true (T) or false (F)
True
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Why might the following nuclear reaction not be very good for energy production in a fusion reactor?
Fe + 
Fe ? 
Te
A. The material only produces a few neutrons so the chain reaction will not be very efficient. B. The products are not the right size to obtain any energy from the missing mass due to the strong nuclear force. C. The reactants are too stable, and it would cost energy to produce the product due to strong nuclear force. D. The mass of the by-products is too high, and therefore, the energy released will not be high enough. E. Interatomic attraction between the products will impede the separation of the atoms from the unstable nuclei.
Use the geologic cross section to determine the age of rock layer D as precisely as possible
A) It is 40 million years old. B) It is between 39 million years old and 25 million years old. C) It is between 39 million years old and 17 million years old. D) It is older than 17 million years old.
Which of the following is NOT true about solar energy?
A) One can find solar panels for sale in the bazaars of Morocco. B) Solar energy is often a first choice in remote locations. C) Solar heating is used to provide hot water in places like Israel and Japan. D) Solar power is widely used in the United States, providing over 20 percent of the electricity. E) Passive solar energy systems increased in the nineteenth century with glass windows.
Which of the following is true of the a and b anomers of glucose?
A) They have equal but opposite optical rotations. B) They are equally stable. C) both a and b D) neither a nor b