Molality of C a ( N O 3 ) 2 and the total molality of the ions in the solution are to be determined. Concept introduction: Mole fraction: Amount of that component divided by the total amount of all of the components of the mixture ( n A + n B + n C + ... ) . Mole fraction of A (χ A )= n A n A + n B + n C + ... Weight percent: The mass of one component divided by the total mass of the mixture, multiplied by 100 % weight % A = Mass of A Mass of A + Mass of B + Mass of C + ... ×100% The number of moles of any substance can be determined using the equation Number of mole = Given mass of the substance Molar mass Molality (m): Molality is the number of moles of solute present in one kilogram of solvent. Molality (m) = Number of moles of solute 1kg of solvent Molarity (M): Molarity is number of moles of the solute present in the one liter of the solution. Molarity (M) = Number of moles of solute 1 liter of solution Density is calculated by the equation, Density = mass volume

BuyFind

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781337399074
BuyFind

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781337399074

Solutions

Chapter 13, Problem 60GQ
Interpretation Introduction

Interpretation: Molality of Ca(NO3)2 and the total molality of the ions in the solution are to be determined.

Concept introduction:

Mole fraction: Amount of that component divided by the total amount of all of the components of the mixture ( nA +  nB +  n...).

  Mole fraction of A (χA)= nA nA +  nB +  n...

Weight percent: The mass of one component divided by the total mass of the mixture, multiplied by 100%

  weight % A = Mass of A Mass of A + Mass of B + Mass of C + ...×100%

The number of moles of any substance can be determined using the equation

  Numberofmole=GivenmassofthesubstanceMolarmass

Molality (m): Molality is the number of moles of solute present in one kilogram of solvent.

  Molality (m) =Numberofmolesofsolute1kgofsolvent

Molarity (M): Molarity is number of moles of the solute present in the one liter of the solution.

Molarity (M) =Numberofmolesofsolute1literofsolution

Density is calculated by the equation,

  Density=massvolume

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