contestada

Calculate the molality of a sucrose solution made by dissolving 37.4 grams sucrose into 94.2 grams water. The molar mass of sucrose is 342.2 g/mol. Record your answer in scientific notation using 3 significant figures

Respuesta :

Eduard22sly

The molality of the sucrose solution is 1.16 m

Definition of molality

The molality of a solution is defined as the mole of solute per unit kilogram (Kg) of water. Mathematically, it can be expressed as:

Molality = mole / mass (Kg) of water

How to determine the mole of sucrose

  • Mass of sucrose = 37.4 g
  • Molar mass of sucrose = 342.2 g/mol
  • Mole of sucrose =?

Mole = mass / molar mass

Mole of sucrose = 37.4 / 342.2

Mole of sucrose = 0.109 mole

How to determine the molality

  • Mole of sucrose = 0.109 mole
  • Mass of water = 94.2 g = 94.2 / 1000 = 0.0942 Kg
  • Molality =?

Molality = mole / mass (Kg) of water

Molality of sucrose = 0.109 / 0.0942

Molality of sucrose = 1.16 m

Learn more about Molality:

https://brainly.com/question/4251997

Otras preguntas