Respuesta :
Answer:
The concentration of the solution is 2 g/dm³
Explanation:
The equation used to find the concentration of a solution is "c = m/v"
C= concentration
M= mass
V= volume
The question asks for the answer to be in decimeters, so you need to 100 cm³ to dm³. To do this, you divide 100 by 10, giving you 10 cm³. Then you just plug in your numbers into the formula: c = 20g/10dm³.
The concentration of the potassium chloride solution has been [tex]\rm 2\;\times\;10^-^3\;g/dm^3[/tex].
The concentration has been defined as the mass of sample present in a definite volume of the solution. The concentration has been given by the moles, molarity, g/ml, g/L etc.
The concentration attained by the student has been by dissolving 20 g of KCl in [tex]\rm 100\;cm^3[/tex] water has been given in [tex]\rm g/cm^3[/tex] as:
[tex]\rm \dfrac{g}{cm^3}=\dfrac{20\;g}{100\;cm^3}\\ \dfrac{g}{cm^3}=0.2\;g/cm^3[/tex]
The concentration of the solution obtained by the student has been [tex]\rm 0.2\;g/cm^3[/tex].
The conversion of [tex]\rm cm^3\;to\;dm^3[/tex] has been given as:
[tex]\rm 1\;g/cm^3=0.001\;g/dm^3[/tex]
The concentration of [tex]\rm 0.2\;g/cm^3[/tex] solution has been given as:
[tex]\rm 1\;g/cm^3=0.001\;g/dm^3\\0.2\;g/cm^3=0.2\;\times\;0.001\;g/dm^3\\0.2\;g/cm^3=2\;\times\;10^-^3\;g/dm^3[/tex]
The concentration of the potassium chloride solution has been [tex]\rm 2\;\times\;10^-^3\;g/dm^3[/tex].
For more information about concentration of solution, refer to the link:
https://brainly.com/question/202460
