Question 19
The following reaction is balanced: $a\,\mathrm{FeS}_2+b\,\mathrm{O}_2\to c\,\mathrm{Fe}_2\mathrm{O}_3+d\,\mathrm{SO}_2$. Use linear equations to find the smallest positive integer coefficients $a,b,c,d$ that balance it. Calculate $P=a+b+c+d$.
The following source mathematical images preserve the printed option/formula/figure variants; text and choices above or below provide clean typesetting.
The following source mathematical images preserve the printed option/formula/figure variants; text and choices above or below provide clean typesetting.