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The Correlation Between Natural Science And The Humanities At School

Table 2:

Given:m (solut) = 100 g ω (H2SO4) = 91%ω (SO3) = 30% Solutuon:m (H2SO4) = 100 g · 0,91 = 91 gm (H2O) = 100 - 91 = 9 gν (H2O) = 9 g / 18 g/mol = 0,5 mol 0,5 mol 0,5 mol 0,5 mol SO3 + Н2О = H2SO4 1 mol 1 mol 1 mol m (SO3) = 80 g/mol · 0,5 mol = 40 gm (H2SO4) = 98 g/mol · 0,5 mol = 49 gm (H2SO4) = 51,125 kg / 0,2 = 255,625 kgIf m (SO3) = х g, then х х + 140 =0,3х=0,3х + 42; 0,7х = 42; х = 60m (SO3) = 40 g + 60 g = 100 gAnswer: m (SO3) = 100 g
m (SO3) - ?
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