Which two criteria are least important for engineers to consider when developing a process to produce ammonia?
O A. The process should use familiar technologies.
B. The reactants should come from natural sources.
C. The process should be able to be performed safely.
D. The environment around the chemical plant should be protected.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl