Determine the longest wavelength (in nm) of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in K is 1.76 x 10° kJ/mol. Report answer to two significant figures without units.

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".