Answer: 0.83mol/m3
Explanation:
Number of mole = 2.5 mmol = 0.0025mol
Recall
1L = 0.001m3
Therefore 3L = 3x0.001 = 0.003m3
0.003m3 contains 0.0025mol
Therefore, 1m3 will contain = 0.0025/0.003 = 0.83mol
The concentration in mol/m3 is 0.83mol/m3
The concentration of this solution in number of molecules per cubic meter is equal to 5 x 10^23 molecules.
To calculate the amount of molecules present in a given substance, one must use Avogadro's constant, which corresponds to:
[tex]6 \times 10 ^{23}molecules =1mol[/tex]
For this question, we must first calculate the molarity, so that:
[tex]\frac{2.5 \times 10^{-3}mol}{xmol} =\frac{3L}{1L}[/tex]
[tex]x = 0.83 \times 10^{-3} mol/L[/tex]
After that, you must convert the unit of volume to cubic centimeters, that is, milliliters, so that:
[tex]0.83 \times 10^{-3} mol/L = 0.83 mol/ml[/tex]
Finally, just multiply the value obtained by the avogadro constant:
[tex]0.83 \times 6\times 10^{23}= 5 \times 10^{23} molecules[/tex]
So, the concentration of this solution in number of molecules per cubic meter is equal to 5 x 10^23 molecules.
Learn more about mole calculation in: brainly.com/question/2845237
