Calculate The Mass Percentage Of Aspirin (C9H8O 4 ) In Acetonitrile (Ch3Cn) When 6.5G Of C 9H 8O4Is Dissolved In 450 G Of Ch 3Cn.

6.5gm of Aspirin (C9H8O4)  dissolved in 450gm of Acetonitrile (CH3CN)

Mass percent of aspirin = [latex] \frac {Mass of Aspirin}{Mass of Aspirin + Mass of Acetonitrile}[/latex].

[latex] \Rightarrow \frac{6.5}{6.5 + 450} * 100 [/latex].

[latex] \Rightarrow \frac{6.5}{456.5} * 100 [/latex].

[latex] \Rightarrow 0.0142 * 100 [/latex].

[latex] \Rightarrow 1.42% [/latex].

Therefore, the mass percent of aspirin = 1.42%.

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