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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![**Question 23 of 25**
What is the mass in grams of \(7.95 \times 10^{15}\) molecules of NO?
---
**Question 25 of 25**
What quantity of moles of C are formed upon complete reaction of 2 mol of B according to the generic chemical reaction:
\[ A + 2B \rightarrow C \]
**Explanation:**
This section involves two chemistry problems.
1. **Problem about Mass of Molecules:**
- You are asked to calculate the mass of \(7.95 \times 10^{15}\) molecules of nitrogen monoxide (NO). This will involve using Avogadro's number to convert molecules to moles and then calculating the mass using the molar mass of NO.
2. **Stoichiometry Problem:**
- This question involves a stoichiometry calculation. Given a chemical equation \( A + 2B \rightarrow C \), you're asked to determine how many moles of product C are formed from 2 moles of reactant B. In this reaction, for every 2 moles of B reacted, 1 mole of C is formed.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F53917c9e-ccf4-4185-ada8-2f03b0536363%2F96b54048-a049-442e-bc2e-3caf8e8faebb%2Ftfrn1zi_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Question 23 of 25**
What is the mass in grams of \(7.95 \times 10^{15}\) molecules of NO?
---
**Question 25 of 25**
What quantity of moles of C are formed upon complete reaction of 2 mol of B according to the generic chemical reaction:
\[ A + 2B \rightarrow C \]
**Explanation:**
This section involves two chemistry problems.
1. **Problem about Mass of Molecules:**
- You are asked to calculate the mass of \(7.95 \times 10^{15}\) molecules of nitrogen monoxide (NO). This will involve using Avogadro's number to convert molecules to moles and then calculating the mass using the molar mass of NO.
2. **Stoichiometry Problem:**
- This question involves a stoichiometry calculation. Given a chemical equation \( A + 2B \rightarrow C \), you're asked to determine how many moles of product C are formed from 2 moles of reactant B. In this reaction, for every 2 moles of B reacted, 1 mole of C is formed.
![**Question 24 of 25**
According to the balanced reaction below, calculate the quantity of moles of NH₃ gas that form when 4.20 mol of N₂H₄ liquid completely reacts:
\[ 3 \, \text{N}_2\text{H}_4(\text{l}) \rightarrow 4 \, \text{NH}_3(\text{g}) + \text{N}_2(\text{g}) \]
**Explanation:**
In this chemical equation, 3 moles of N₂H₄ produce 4 moles of NH₃. Therefore, to find out how many moles of NH₃ are produced from 4.20 moles of N₂H₄, you can use the following stoichiometry calculation:
\[ \text{(4.20 mol N₂H₄)} \times \left(\frac{4 \, \text{mol NH}_3}{3 \, \text{mol N}_2\text{H}_4}\right) = \text{moles of NH}_3 \]
Perform this calculation to get the final result for moles of NH₃ produced.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F53917c9e-ccf4-4185-ada8-2f03b0536363%2F96b54048-a049-442e-bc2e-3caf8e8faebb%2Fha1zit_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Question 24 of 25**
According to the balanced reaction below, calculate the quantity of moles of NH₃ gas that form when 4.20 mol of N₂H₄ liquid completely reacts:
\[ 3 \, \text{N}_2\text{H}_4(\text{l}) \rightarrow 4 \, \text{NH}_3(\text{g}) + \text{N}_2(\text{g}) \]
**Explanation:**
In this chemical equation, 3 moles of N₂H₄ produce 4 moles of NH₃. Therefore, to find out how many moles of NH₃ are produced from 4.20 moles of N₂H₄, you can use the following stoichiometry calculation:
\[ \text{(4.20 mol N₂H₄)} \times \left(\frac{4 \, \text{mol NH}_3}{3 \, \text{mol N}_2\text{H}_4}\right) = \text{moles of NH}_3 \]
Perform this calculation to get the final result for moles of NH₃ produced.
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