IDNLearn.com is designed to help you find the answers you need quickly and easily. Our Q&A platform offers reliable and thorough answers to ensure you have the information you need to succeed in any situation.
Sagot :
To find the molarity of the NaCl solution, we need to follow these steps:
1. Calculate the number of moles of NaCl present:
- First, we need to know the mass of NaCl (given as 36.29 grams) and its molar mass. The molar mass of NaCl (sodium chloride) is 58.44 g/mol.
- The number of moles ([tex]\( n \)[/tex]) is calculated using the formula:
[tex]\[ n = \frac{\text{mass}}{\text{molar mass}} \][/tex]
Substituting the given mass and molar mass:
[tex]\[ n = \frac{36.29 \text{ g}}{58.44 \text{ g/mol}} \approx 0.6209787816563997 \text{ moles} \][/tex]
2. Calculate the molarity of the NaCl solution:
- Molarity ([tex]\( M \)[/tex]) is defined as the number of moles of solute per liter of solution. This can be calculated using the formula:
[tex]\[ M = \frac{\text{moles of solute}}{\text{volume of solution in liters}} \][/tex]
Given that the volume of the solution is 2.30 liters:
[tex]\[ M = \frac{0.6209787816563997 \text{ moles}}{2.30 \text{ L}} \approx 0.2699907746332173 \text{ M} \][/tex]
3. Compare the calculated molarity to the given options:
- The calculated molarity is approximately 0.270 M NaCl.
- Reviewing the multiple-choice options, we see that:
- A) 15.78 M NaCl
- B) 0.0634 M NaCl
- C) 0.270 M NaCl
- D) 2.70 M NaCl
Given that the calculated molarity (0.270 M NaCl) matches one of the provided choices:
The correct answer is C) 0.270 M NaCl.
1. Calculate the number of moles of NaCl present:
- First, we need to know the mass of NaCl (given as 36.29 grams) and its molar mass. The molar mass of NaCl (sodium chloride) is 58.44 g/mol.
- The number of moles ([tex]\( n \)[/tex]) is calculated using the formula:
[tex]\[ n = \frac{\text{mass}}{\text{molar mass}} \][/tex]
Substituting the given mass and molar mass:
[tex]\[ n = \frac{36.29 \text{ g}}{58.44 \text{ g/mol}} \approx 0.6209787816563997 \text{ moles} \][/tex]
2. Calculate the molarity of the NaCl solution:
- Molarity ([tex]\( M \)[/tex]) is defined as the number of moles of solute per liter of solution. This can be calculated using the formula:
[tex]\[ M = \frac{\text{moles of solute}}{\text{volume of solution in liters}} \][/tex]
Given that the volume of the solution is 2.30 liters:
[tex]\[ M = \frac{0.6209787816563997 \text{ moles}}{2.30 \text{ L}} \approx 0.2699907746332173 \text{ M} \][/tex]
3. Compare the calculated molarity to the given options:
- The calculated molarity is approximately 0.270 M NaCl.
- Reviewing the multiple-choice options, we see that:
- A) 15.78 M NaCl
- B) 0.0634 M NaCl
- C) 0.270 M NaCl
- D) 2.70 M NaCl
Given that the calculated molarity (0.270 M NaCl) matches one of the provided choices:
The correct answer is C) 0.270 M NaCl.
We value your presence here. Keep sharing knowledge and helping others find the answers they need. This community is the perfect place to learn together. IDNLearn.com is committed to your satisfaction. Thank you for visiting, and see you next time for more helpful answers.