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An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
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To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.
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Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold
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Un gas ocupa un volumen de 1475 ml a la presión de 1145 hPa .Se le permite expandir, trabajando isot...
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