What is the wavelength of green light (in nm) with a frequency of 5.98 x 1014 s-1? A) 5.02 x 10-7 nm
B) 1.99 x 10-6 nm
C) 502 nm
D) 545 nm
E) 5.45 x 10-7 nm

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it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

the answer is symmetrical : )