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23 votes
Helllllppppp plssssssss​

Helllllppppp plssssssss​-example-1

1 Answer

12 votes


\Large \text{1)}


\textbf{Use the formula and substitute the values}


\displaystyle 0.3\ mol/L = (n \ mol)/(10 * 10^(-3)\ L)


\textbf{Solve for the number of moles}


n = 0.003\ mol


\textbf{Calculate final volume }


40+10=50\ mL


\textbf{Number of moles remains same. Solve for concentration}


\displaystyle C=(0.003\ mol)/(50 * 10^(-3)\ L) =0.06\ mol/L


\Large \text{2)}


\displaystyle DF=(V_f)/(V_i)


\displaystyle DF=(50)/(10)=5

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