Jaką cześć mola stanowi 49 g kwasu ortofosforowego 5 H₃PO₄
H3PO4 = 1g/mol * 3 + 31 g/mol + 16 g/mol * 4 = 98g/mol
98g ------ 1mol
49g-------x mol
x mol = 49g * 1 mol / 98 g
x mol = 0,5
odp. 49 g h3po4 stanowi 0,5 mola .
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H3PO4 = 1g/mol * 3 + 31 g/mol + 16 g/mol * 4 = 98g/mol
98g ------ 1mol
49g-------x mol
x mol = 49g * 1 mol / 98 g
x mol = 0,5
odp. 49 g h3po4 stanowi 0,5 mola .