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A solution is prepared by dissolving 6.42 g of Na_2SO_4 in enough water to make 135 mL of solution. Calculate the solution’s molarity.

Determine the concentration (in moles/L) of a solution made by dissolving 43.2 g of sodium chloride in 290 mL of solution.

Determine the concentration (in moles/L) of a solution made by dissolving 24.8 g of sodium chloride in 750 mL of solution.

How many grams of NaCl are contained in 350 mL of a 0.238 M solution of sodium chloride?

Calculate the mass of silver nitrate (in grams) in a 145 mL solution of 4.71 M AgNO_3.

Calculate the mass of silver nitrate (in grams) in a 290 mL solution of 4.71 M AgNO_3.

Respuesta :

mickymike92
  • The molarity of the solution is 0.33 M
  • Concentration = 2.54 mol/dm³
  • Concentration = 0.56 mol/dm³
  • Mass of NaCl =  4.87 g
  • Mass of AgNO₃ =  116.1 g
  • Mass of AgNO₃ =  232.2 g

What is the molarity of the solution?

The molarity of the solution is given as follows:

  • Molarity = mass/molar mass /volume (L)

Molarity = 6.42/142/0.135 = 0.33 M

What is the concentration of the solution?

The concentration of the solution is given below:

  • Concentration = mass/molar mass /volume (L)

Concentration = 43.2/58.5/0.29

Concentration = 2.54 mol/dm³

What is the concentration of the solution?

The concentration of the solution is given below:

Concentration = mass/molar mass /volume (L)

Concentration = 24.8/58.5/0.75

Concentration = 0.56 mol/dm³

What is the mass of NaCl?

  • The mass of the NaCl = concentration * molar mass * volume

Mass of NaCl = 0.238 * 58.5 * 0.35

Mass of NaCl =  4.87 g

What is the  mass of silver nitrate (in grams) in a 145 mL solution of 4.71 M AgNO₃?

  • The mass of the AgNO₃ = concentration * molar mass * volume

Mass of AgNO₃ = 4.71 * 170 * 0.145

Mass of AgNO₃ =  116.1 g

What is the  mass of silver nitrate (in grams) in a 145 mL solution of 4.71 M AgNO₃?

  • The mass of the AgNO₃ = concentration * molar mass * volume

Mass of AgNO₃ = 4.71 * 170 * 0.29

Mass of AgNO₃ =  232.2 g

In conclusion, the mass of the substances are derived from the volume and concentration of the solution as well as the molar mass of the substance.

Learn  more about molar mass, concentration and mass at: https://brainly.com/question/23437000

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