alaylaknight alaylaknight

12-12-2020
Biology

contestada

ITSS DUEE HELPP!! put the number by which one you answer

ITSS DUEE HELPP put the number by which one you answer class=

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ash1231177 ash1231177

12-12-2020

Hi okay so for the first add 2 in front of o2 and add 2 in front of H2O

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varshi242 varshi242

13-12-2020

For third one add 4 in front of Al, 3 in front of O2, 2 in front of Al2O3

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