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
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 by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter3: Composition Of Substances And Solutions
Section: Chapter Questions
Problem 10E: Which contains the greatest number of moles of oxygen atoms: 1 mol of ethanol (C2H5OH), 1 mol of...
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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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0e109430-7b34-4d38-8cab-38f4ccc5aed5%2F1b2eaa3b-0f21-45e1-a552-01639e50c82e%2F21l3atl_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**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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