**Calculating Moles from Mass and Molar Mass**To successfully convert between the mass and moles of a compound, you need to understand and utilize the molar mass of the substance in question.**Example Problem****Problem Statement:**Use the molar mass of copper(II) nitrite, which is 155.6 g/mol, to calculate the moles of copper(II) nitrite present in a 39.4-g sample of the compound.\[ \text{Moles of copper(II) nitrite} = \square \; \text{mol} \]**Solution Approach:**1. **Identify the Given Data:** - Molar mass of copper(II) nitrite: 155.6 g/mol - Mass of the sample: 39.4 g2. **Use the Formula to Calculate Moles:** - The formula to convert mass to moles is: \[ \text{Moles} = \frac{\text{Mass (g)}}{\text{Molar Mass (g/mol)}} \] - Plugging in the values: \[ \text{Moles of copper(II) nitrite} = \frac{39.4\; \text{g}}{155.6 \; \text{g/mol}} \]3. **Calculate the Result:** - Perform the division to find the number of moles.By following these steps, you can determine the number of moles from a given mass and molar mass, essential knowledge for stoichiometry and chemical calculations.

Moles = (mass/molar mass) Mass = 39.4 grams Molar mass = 155.6 g/mol

Answered: Convert betweell Use the molar mass of…

Convert betweell Use the molar mass of copper(II) nitrite, 155.6 g/mol, to calculate the moles of copper (II) nitrite present in a 39.4-g sample of the compound. mol

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

**Calculating Moles from Mass and Molar Mass**

To successfully convert between the mass and moles of a compound, you need to understand and utilize the molar mass of the substance in question.

**Example Problem**

**Problem Statement:**

Use the molar mass of copper(II) nitrite, which is 155.6 g/mol, to calculate the moles of copper(II) nitrite present in a 39.4-g sample of the compound.

\[ \text{Moles of copper(II) nitrite} = \square \; \text{mol} \]

**Solution Approach:**

1. **Identify the Given Data:**
- Molar mass of copper(II) nitrite: 155.6 g/mol
- Mass of the sample: 39.4 g

2. **Use the Formula to Calculate Moles:**
- The formula to convert mass to moles is:
\[
\text{Moles} = \frac{\text{Mass (g)}}{\text{Molar Mass (g/mol)}}
\]
- Plugging in the values:
\[
\text{Moles of copper(II) nitrite} = \frac{39.4\; \text{g}}{155.6 \; \text{g/mol}}
\]

3. **Calculate the Result:**
- Perform the division to find the number of moles.

By following these steps, you can determine the number of moles from a given mass and molar mass, essential knowledge for stoichiometry and chemical calculations.

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