megan-parker_60c034337ac8d
megan-parker_60c034337ac8d
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acido fosforico é H3PO4 a) 1 mol de H3PO4 --> 98 g x mol de H3PO4 --> 4,9 g x = 0,05 mols b) 6,02 x 10^23 ---> 98 g de H3PO4 x atomos --> 4,9 g de H3PO4 x = 0,301 x 10^23 ou 3,01 x 10^22 atomos de H3PO4