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:**
What mass of NaOH is contained in 150.0 mL of a 0.300 M sodium hydroxide solution?
**Solution:**
Mass = [ ] g
**Explanation:**
To find the mass of NaOH, you need to use the formula relating molarity (M), volume (L), and molar mass (g/mol). The steps include:
1. **Convert volume from mL to L:**
\(150.0 \, \text{mL} = 0.1500 \, \text{L}\)
2. **Calculate moles of NaOH using molarity:**
\(\text{Moles of NaOH} = \text{Molarity} \times \text{Volume in L} = 0.300 \, \text{M} \times 0.1500 \, \text{L} = 0.0450 \, \text{moles}\)
3. **Calculate mass using moles and molar mass of NaOH:**
(The molar mass of NaOH is approximately 40.00 g/mol)
\(\text{Mass} = \text{Moles} \times \text{Molar Mass} = 0.0450 \, \text{moles} \times 40.00 \, \text{g/mol} = 1.800 \, \text{g}\)
So, the mass of NaOH is 1.800 g.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb692af84-21f3-4e00-9062-ab31ad5014d9%2F398fcd72-f41b-477d-baba-3cf4f767f6e8%2Fshe01wh_processed.png&w=3840&q=75)
Transcribed Image Text:**Question:**
What mass of NaOH is contained in 150.0 mL of a 0.300 M sodium hydroxide solution?
**Solution:**
Mass = [ ] g
**Explanation:**
To find the mass of NaOH, you need to use the formula relating molarity (M), volume (L), and molar mass (g/mol). The steps include:
1. **Convert volume from mL to L:**
\(150.0 \, \text{mL} = 0.1500 \, \text{L}\)
2. **Calculate moles of NaOH using molarity:**
\(\text{Moles of NaOH} = \text{Molarity} \times \text{Volume in L} = 0.300 \, \text{M} \times 0.1500 \, \text{L} = 0.0450 \, \text{moles}\)
3. **Calculate mass using moles and molar mass of NaOH:**
(The molar mass of NaOH is approximately 40.00 g/mol)
\(\text{Mass} = \text{Moles} \times \text{Molar Mass} = 0.0450 \, \text{moles} \times 40.00 \, \text{g/mol} = 1.800 \, \text{g}\)
So, the mass of NaOH is 1.800 g.
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