Seudónimo
Seudónimo
09-01-2017
Biology
contestada
Please help I don't understand
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MonsieurPengu
MonsieurPengu
09-01-2017
NaCl: natriumchloride. 1 atom of each, so the 2 is too much and I (capital i here) is another element
So for the second excercise the number behind the symbol is the amount of atoms in the compound. So easily 2 atoms of Li, 1 atom of S and 4 of O
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