## anonymous 4 years ago A student prepared a sample of aspirin with a mass of 3.92g. If the reaction produce 80.00% yield, what was the theorectical yield of the reactant?

1. Xishem

We can set up a proportion here... $\frac{yield_{actual}}{yield_{theoretical}}=\frac{mass_{actual}}{mass_{theoretical}}$Rewritten in terms of the theoretical mass...$mass_{theoretical}=\frac{(mass_{actual})(yield_{theoretical})}{yield_{actual}}$Since, we expect to get 100% from such processes, theoretically...$mass_{theoretical}=\frac{(3.92g)(100\%)}{80\%}=4.90g$

2. anonymous

thanks