Class 9 Exam > Class 9 Questions > How many moles are present in 2.3 g of Na ?a)...
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How many moles are present in 2.3 g of Na ?
- a)2 mole
- b)1 mole
- c)2/3 mole
- d)0.1 mole
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
How many moles are present in 2.3 g of Na ?a)2 moleb)1 molec)2/3 moled...
Molecular mass of Sodium is 23 u. So, 23 g of Sodium (Na) is equal to 1 mole of Na.
Number of moles of Na present in 2.3 g of Na = Given mass of Na / Molar mass of Na = 2.3 / 23 = 0.1 mole
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How many moles are present in 2.3 g of Na ?a)2 moleb)1 molec)2/3 moled...
Understanding Moles
To determine how many moles are present in 2.3 g of sodium (Na), we first need to understand the concept of a mole and how to calculate it.
Molar Mass of Sodium (Na)
- The molar mass of sodium is approximately 23 g/mol. This value indicates that one mole of sodium weighs 23 grams.
Calculating Moles of Sodium
- To find the number of moles in a given mass, use the formula:
Moles = Mass (g) / Molar Mass (g/mol)
- For sodium, we can substitute the values into the formula:
Moles = 2.3 g / 23 g/mol
Performing the Calculation
- When you perform the calculation:
- Moles = 2.3 / 23 = 0.1 moles
Conclusion
- Therefore, the number of moles present in 2.3 g of Na is 0.1 moles.
Final Answer
- The correct answer is option 'D', which states that there are 0.1 moles of sodium in 2.3 grams.
Understanding the relationship between mass and moles is crucial for solving problems in chemistry, especially in stoichiometry.
To determine how many moles are present in 2.3 g of sodium (Na), we first need to understand the concept of a mole and how to calculate it.
Molar Mass of Sodium (Na)
- The molar mass of sodium is approximately 23 g/mol. This value indicates that one mole of sodium weighs 23 grams.
Calculating Moles of Sodium
- To find the number of moles in a given mass, use the formula:
Moles = Mass (g) / Molar Mass (g/mol)
- For sodium, we can substitute the values into the formula:
Moles = 2.3 g / 23 g/mol
Performing the Calculation
- When you perform the calculation:
- Moles = 2.3 / 23 = 0.1 moles
Conclusion
- Therefore, the number of moles present in 2.3 g of Na is 0.1 moles.
Final Answer
- The correct answer is option 'D', which states that there are 0.1 moles of sodium in 2.3 grams.
Understanding the relationship between mass and moles is crucial for solving problems in chemistry, especially in stoichiometry.
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How many moles are present in 2.3 g of Na ?a)2 moleb)1 molec)2/3 moled)0.1 moleCorrect answer is option 'D'. Can you explain this answer?
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How many moles are present in 2.3 g of Na ?a)2 moleb)1 molec)2/3 moled)0.1 moleCorrect answer is option 'D'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about How many moles are present in 2.3 g of Na ?a)2 moleb)1 molec)2/3 moled)0.1 moleCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How many moles are present in 2.3 g of Na ?a)2 moleb)1 molec)2/3 moled)0.1 moleCorrect answer is option 'D'. Can you explain this answer?.
How many moles are present in 2.3 g of Na ?a)2 moleb)1 molec)2/3 moled)0.1 moleCorrect answer is option 'D'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about How many moles are present in 2.3 g of Na ?a)2 moleb)1 molec)2/3 moled)0.1 moleCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How many moles are present in 2.3 g of Na ?a)2 moleb)1 molec)2/3 moled)0.1 moleCorrect answer is option 'D'. Can you explain this answer?.
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