Respuesta :
Hey there!:
Molar mass sucrose = 342.3 g/mol
Number of moles:
n = m / mm
n = 43.0 / 342.3 => 0.1256 moles of sucrose
Volume in liters of solution:
355 mL / 1000 => 0.355 L
Therefore:
M = n / V
M = 0.1256 / 0.355
= 0.353 M
Hope that helps!
Taking into account the definition of molarity, the molarity of sucrose in the drink is 0.355[tex]\frac{moles}{liter}[/tex].
Molarity is a measure of the concentration of a compound or substance that is defined as the amount of a substance in a certain volume of solution.
In other words, Molarity is the number of moles of solute that are dissolved in a given volume.
Molarity is calculated by dividing the moles of the solute by the volume of the solution:
[tex]Molarity=\frac{number of moles of solute}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].
On the other hand, molar mass is the amount of mass that a substance contains in one mole. In this case the molar mass of sucrose is 342.3 g/mol. So, the number of moles that contain 43 g of sucrose can be calculated as:
[tex]43 gramsx\frac{1 mole}{342.3 grams} =[/tex] 0.126 moles
Then, you know:
- number of moles of solute= 0.126 moles
- volume=355 mL= 0.355 L (being 1000 mL= 1 L)
Replacing in the definition of molarity:
[tex]Molarity=\frac{0.126 moles}{0.355 mL}[/tex]
Solving:
Molarity= 0.355[tex]\frac{moles}{liter}[/tex]
Finally, the molarity of sucrose in the drink is 0.355[tex]\frac{moles}{liter}[/tex].
Learn more about molarity with this example: brainly.com/question/15406534?referrer=searchResults