Chemistry, 28.08.2019 04:30 alfarodougoy8lvt
Alchemists in the middle ages dreamed of converting base metals, such as lead, into precious metals—gold and silver. why could they never succeed? today could we convert lead into gold?
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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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Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust
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Alchemists in the middle ages dreamed of converting base metals, such as lead, into precious metals—...
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