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sharii
Questions (1)
Fe 3+ + scn- + Na2PHO4 produces what exactly?
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Answers (1)
a(a+7)-3(a+7)=-9 a^2+7a-3a-21+9=0 a^2+4a-12=0 a^2+6a-2a-12=0 a(a+6)-2(a+6)=0 a+6=0 a=-6 OR a-2=0 a=2
