Question

How many grams (of mass m) of glucose are in 205mL of a 5.50% (m/v) glucose solution?

Answer 1

Let's remember the definition of a m/v% concentration:

`Concentration=\frac{\text{Solute mass}}{Solution\text{ Volume}}\cdot100`

In this question, we're given that:

`\begin{gathered} \text{percentage}=(5.50m)/(v) \\ Solution_{\text{ }}volume=205ml \end{gathered}`

What we're going to do to find the solute mass, is to solve the equation for it:

`\text{solute mass = (}(((5.50g)/(ml))(205ml))/(100))=11.275g`

Therefore, there are 11.275g of glucose in the solution.