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Which statement best explains why the atomic theory developed efficiently

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

Which statement best describes the function of enzymes?