Question
What is the mass/volume percent concentration of the following solutions?(a) $0.078 \mathrm{~mol} \mathrm{KCl}$ in $75 \mathrm{~mL}$ of solution(b) 0.044 mol sucrose $\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\right)$ in $380 \mathrm{~mL}$ of solution
Step 1
We can do this by multiplying the number of moles of the solute by its molar mass. For KCl, the molar mass is 74.55 g/mol. So, the mass of KCl is: \[0.078 \, \text{mol} \times 74.55 \, \text{g/mol} = 5.81 \, \text{g}\] Show more…
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