Объяснение:
Мr(Na2O2)=2•23+2•16=46+32=78
w(O)=n•Ar(O)/Mr(Na2O2)=2•16/78=32/78= 0.41.03 (41.03%)
PS! w(Na)=n•Ar(Na)/Mr(Na2O2)=2•23/78= 46/78 = 0.5897 (58.97%)
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Объяснение:
Мr(Na2O2)=2•23+2•16=46+32=78
w(O)=n•Ar(O)/Mr(Na2O2)=2•16/78=32/78= 0.41.03 (41.03%)
PS! w(Na)=n•Ar(Na)/Mr(Na2O2)=2•23/78= 46/78 = 0.5897 (58.97%)