Question

which one has more atoms 10 g of Al or 10 g of Fe with formula prove?​

Answer 1

Answer:

Answer is 10g of Al (0.37 mol) (Fe- 0.18 mol)

Because total moles is, given mass upon molar mass. Since molar mass of Al is less than Fe hence Al has more moles in 10g.

Answer 2

Iron has more number of atoms for the given amount.

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$      .....(1)

According to mole concept:

1 mole of an element contains $6.022\times 10^{23}$ number of atoms

• For aluminium:

Given mass of aluminium = 10 g

Molar mass of aluminium = 27 g/mol

Putting values in equation 1, we get:

$\text{Moles of aluminium}=\frac{10g}{27g/mol}=0.370mol$

Number of atoms of aluminium = $(0.370\times 6.022\times 10^{23})=2.23\times 10^{23}$

• For iron:

Given mass of iron = 10 g

Molar mass of iron = 55.85 g/mol

Putting values in equation 1, we get:

$\text{Moles of iron}=\frac{10g}{55.85g/mol}=0.179mol$

Number of atoms of iron = $(0.179\times 6.022\times 10^{23})=1.078\times 10^{23}$

Learn more about mole concept:

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