Answer:
[tex]0.2\text{ mole}[/tex]Explanation:
Here, we want to get the number of moles of glucose in 0.5L of 0.4 M solution
Firstly, we need to recall that concentration or molarity is of the unit mol/dm^3
Mathematically, 1L is 1 dm^3 , thus, we have it that 0.4M is the same as 0.4 mol/dm^3
Now, to get the number of moles from molarity, we have to multiply the molarity by the volume
We have that as:
[tex]\begin{gathered} \text{Number of moles = molarity }\times\text{ volume} \\ \text{Number of moles = 0.4 }\times0.5\text{ = 0.2 mole} \end{gathered}[/tex]