What is the number of atoms in 280 g of Fe? | vedclass

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(D) Moles of $Fe = \frac{280}{56} = 5 \ mol$. Number of atoms in $Fe = 5 	imes N_A$. Moles of $N$ in $35 \ g = \frac{35}{14} = 2.5 \ mol$. Number of

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(D) Moles of $Fe = \frac{280}{56} = 5 \ mol$. Number of atoms in $Fe = 5 	imes N_A$. Moles of $N$ in $35 \ g = \frac{35}{14} = 2.5 \ mol$. Number of atoms in $N = 2.5 	imes N_A$. Moles of $H$ in $10 \ g = \frac{10}{1} = 10 \ mol$. Number of atoms in $H = 10 	imes N_A$. Since $5 	imes N_A$ is not equal to $2.5 	imes N_A$ and is not half of $10 	imes N_A$ (which is $5 	imes N_A$),the correct answer is $D$.

What is the number of atoms in $280 \ g$ of $Fe$?

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