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{"ops":[{"insert":"Find to three significant digits the charge and the mass of the following particles. (a) an ionized hydrogen atom, represented as H"},{"attributes":{"script":"super"},"insert":"+"},{"insert":" (b) a singly ionized sodium atom, Na"},{"attributes":{"script":"super"},"insert":"+"},{"insert":" (c) a chloride ion Cl"},{"attributes":{"script":"super"},"insert":"-"},{"insert":" (d) a doubly ionized calcium atom, Ca"},{"attributes":{"script":"super"},"insert":"++"},{"insert":" = Ca"},{"attributes":{"script":"super"},"insert":"2+"},{"insert":" (e) the center of an ammonia molecule, modeled as an N"},{"attributes":{"script":"super"},"insert":"3-"},{"insert":" ion (f) quadruply ionized nitrogen atoms, N"},{"attributes":{"script":"super"},"insert":"4+"},{"insert":", found in plasma in a hot star (g) the nucleus of a nitrogen atom (h) the molecular ion H"},{"attributes":{"script":"sub"},"insert":"2"},{"insert":"O"},{"attributes":{"script":"super"},"insert":"-"},{"insert":"\u00a0\n"}]}

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