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2014-09-23T17:58:59+03:00
Masa molara H2CO3 = 2+12+48=62 g/mol
62 g H2CO3........3*16 g O
124 g H2CO3............x g O               x = 96 g O

62 g H2CO3............12 g C
x g H2CO3..............36 g C          x = 186 g H2CO3
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