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M 2 Ag2O = 464g/mol
M O2 = 32g/mol
550g ----- x g
464g ---- 32g
x = około 38g
Odp: Powstanie około 38g tlenu.
2 Ag2O --> 4Ag + O2
550g x
464 - 32
550 - x
x= 37,93g