Question

Which of the two is heavier – 2 g of iron or 2 g atom of iron.

Answer 1

Explanation:

your question might be wrong -2 g iron is not exist however 2g ato. of iron means 56×2=112 g mole

Answer 2

Out of the two is heavier – 2 g of iron or 2 g atom of iron 2 g atom is heavier.

• 2 g atom means that two moles of iron which is equal to 2 × 6.022 × 10²³ atoms.
• The mass of one iron atom is 56 grams.
• The mass of 2 × 6.022 × 10²³ atoms = 56 × 2 × 6.022 × 10²³ grams.
• The number of moles in 2 g of iron is $\frac{2}{56} moles$.
• So, the number of atoms in 2g of iron is $\frac{2}{56} \times 6.022 \times {10}^{23}$.
• The mass of 2 g of iron is $\frac{2}{56} \times 6.022 \times {10}^{23} \times 56 \: grams$ = 2 × 6.022 × 10²³ grams.
• So, 2 g atom is heavier than 2 g iron.

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