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How many protons are in an element with an atomic number or 8 and a mass number of 18?
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What is the chemical formula of magnesium bromide? a. mgbr2 b. mgbr c. mg2br2 d. mg2br
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Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products
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How many protons are in an element with an atomic number or 8 and a mass number of 18?...
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