although fusion is an energetically favorable reaction for light nuclei, it does not occur under standard conditions on earth because:

fission reactions are always favored over fusion reactions

a large amount of energy must be invested into the reaction before it can occur

atoms on earth are generally too large to participate in fusion reactions

fusion reactions usually do not produce sufficient energy to make them worthwhile

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm