Number of electrons in half mole of Na+
Correct answer: D. 5NA
- A. 10NA
- B. 5.5NA
- C. 5
- D. 5NA
Explanation
Each Na+ has 10 electrons so in half mole of Na+ there will be 6.02x10^23 /2 ions.If we take 6.02x10^23 as NA 1 Na+ => 10 electrons NA/2 Na+ => x electrons x= NA/2 x10x= 5NA
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Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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