Skip to content

Help Zone

Student Question

Secondary III • 1yr.

Hello!

In my homework, it requires converting a 77 g / ml concentration into a mass volume percentage, but I don't know how.

Thanks for your help in advance!

Science
avatar
avatar

{t c="richEditor.description.title"} {t c="richEditor.description.paragraphMenu"} {t c="richEditor.description.inlineMenu"} {t c="richEditor.description.embed"}

Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

    Options
    Team Alloprof • 1yr.


    Hi!

    When we want to know the concentration of a solution in mass volume percentage (% m / v), we first want to put the concentration on a denominator of 100 ml. It will then be necessary to determine the quantity of solute in this volume.

    Here is one way to solve this problem:

    $$\frac{77 \;g}{1 \;ml}=\frac{x}{100 \; ml}\Rightarrow x = \frac{77 \;g \times 100 \; ml}{1 ml \;}$$

    $$x = 7700 g$$

    The concentration is therefore 7,700% m / v.


    Hope this enlightens your understanding! Don't hesitate to ask other questions 😊