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In one mole of the compound iron(III) oxide,
what fraction of the total number of ions is
the oxygen ion? What is 4 x 6? Could someone help me with these math problems? I can't figure them out. Solve the linear equation;
x+2y=15
y=-2x+0 9x-12y=-3
-12x+16y=4? A partir de qual atividade o homem relacionava-se com o tempo durante o tempo medieval? White light is directed at difraction grating at angle normal to gratting.starting at norml to grating 0dgre the odr of red,gren,blue wil be?