Question

Calculate the number of atoms in
1) 52 moles of He
2)52 g of He​

Answer 1

Answer:

1

Explanation:

52 moles of helium has 52Na atoms

whereas 52g has 52÷4=13 moles = 13Na atoms

Answer 2

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ʀᴇǫᴜɪʀᴇᴅ ᴀɴsᴡᴇʀ-:

1) 52 moles of He

➜Number of He atoms = n×NA

= 52×6.022×10²³

=3.131×10²$^5$

2) 52g of He

➜Number of moles of He,n=$\frac{w}{m}$=$\frac{52g}{4g(mol)}$

= 13 moles

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