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Wittaler [7]
3 years ago
5

A 2.26 M solution of KOH is prepared. Calculate the moles and mass of solute present in a 15.2-mL sample of this solution. The m

olar mass of KOH is 56.11 g/mol.
Chemistry
1 answer:
kenny6666 [7]3 years ago
7 0

Answer:

0.0344 moles and 1.93g.

Explanation:

Molarity is defined as the ratio between moles of a solute (In this case, KOH), and the volume. With molarity and volume we can solve the moles of solute. With moles of solute we can find mass of the solute as follows:

<em>Moles KOH:</em>

15.2mL = 0.0152L * (2.26mol / L) = 0.0344moles

<em>Mass KOH:</em>

0.0344 moles * (56.11g/mol) = 1.93g of KOH

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Explanation :

Density : The mass per unit volume of a substance is known as density.

Formula used:

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As we are given:

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First we have to convert mass of sample from pound to gram.

Conversion used:

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Now we have to calculate the volume of liquid.

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