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What does the molarity of a solution indicate?
A) The concentration in grams of a substance in the solution
B) The concentration in grams of the substance per gram of water
C) The concentration in moles of a substance per mole of water
D) The concentration in moles of a substance in the solution

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Thetelrjdsbah47
The answer is D the concentrations is most common of the units used to measure the concentration of a solution
Eduard22sly

The molarity of a solution indicates the concentration in moles of a substance in the solution (Option D)

What is molarity?

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

For example: What is the molarity of a solution containing 75 g of KNO₃ in 0.35 L of solution.

How to determine the mole of KNO₃

  • Mass of KNO₃ = 75 g
  • Molar mass of KNO₃ = 39 + 14 + (3×16) = 101 g/mol
  • Mole of KNO₃ =?

Mole = mass / molar mass

Mole of KNO₃ = 75 / 101

Mole of KNO₃ = 0.743 mole

How to determine the molarity

  • Mole of KNO₃ = 0.743 mole
  • Volume = 0.35 L
  • Molarity =?

Molarity = mole / Volume

Molarity = 0.743 / 0.35

Molarity = 2.12 mol/L

From the above, we can see that the molarity indicates the concentration in mole of the substance in the solution.

Thus, the correct answer to the question is:

The concentration in moles of a substance in the solution (Option D)

Learn more about molarity:

https://brainly.com/question/9468209

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