# Calculate the molarity of a substance. A) 5 moles of HCI in two liters. B) 2 moles of NaOH in one...

## Question:

Calculate the molarity of a substance.

A) {eq}5 {/eq} moles of {eq}\mathrm{HCI} {/eq} in two liters.

B) {eq}2 {/eq} moles of {eq}\mathrm{NaOH} {/eq} in one liter.

C) {eq}0.5 {/eq} moles of {eq}\mathrm{HCI} {/eq} in one liter.

D) {eq}36 {/eq} grams of {eq}\mathrm{HCI} {/eq} in one liter.

## Different Molarity Concentration:

If the value of the number of moles {eq}n {/eq} of the solute and volume of the solution {eq}V {/eq} is given, then we'll use the direct formula shown below for the molarity concentration of the solution.

- {eq}\displaystyle \textrm{Molarity}=\frac{n}{V} {/eq}

If the mass {eq}m {/eq} of the substance is given, then we'll use the formula shown below:

{eq}\displaystyle \textrm{Molarity}=\frac{m}{VM} {/eq}, where,

- {eq}M {/eq} is the molar mass of the substance.

## Answer and Explanation: 1

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**A)**

We are given the following data:

- The value of the number of the moles of the given solute is {eq}n= 5\ moles {/eq}.

- The value of the volume of...

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Chapter 8 / Lesson 4What is molarity? What is molality? Compare molarity vs molality by viewing molality and molarity formulas, how to calculate molarity and molality, and examples.