Question

Де міститься більше атомів:у Ферумі массою 16,8г чи у Силіцію массою 16,8г?У скільки разів?

Answer 1

У сицилия в 3,5 раза

Answer 2

Comparison of Number of Atoms in Iron and Silicon

To determine where more atoms are contained, we can compare the number of atoms in 16.8 grams of Iron and 16.8 grams of Silicon.

Calculating the Number of Atoms in Iron: The molar mass of Iron (Fe) is approximately 55.845 g/mol [[1]]. Using this molar mass, we can calculate the number of moles in 16.8 grams of Iron: ``` moles of Iron = mass of Iron / molar mass of Iron = 16.8 g / 55.845 g/mol ≈ 0.301 moles ``` Next, we can use Avogadro's number to find the number of atoms in 0.301 moles of Iron: ``` number of atoms of Iron = moles of Iron * Avogadro's number ≈ 0.301 * 6.022 x 10^23 ≈ 1.81 x 10^23 atoms ```

Calculating the Number of Atoms in Silicon: The molar mass of Silicon (Si) is approximately 28.0855 g/mol [[2]]. Using this molar mass, we can calculate the number of moles in 16.8 grams of Silicon: ``` moles of Silicon = mass of Silicon / molar mass of Silicon = 16.8 g / 28.0855 g/mol ≈ 0.598 moles ``` Using Avogadro's number, we can find the number of atoms in 0.598 moles of Silicon: ``` number of atoms of Silicon = moles of Silicon * Avogadro's number ≈ 0.598 * 6.022 x 10^23 ≈ 3.60 x 10^23 atoms ```

Conclusion:

Comparing the number of atoms in 16.8 grams of Iron and 16.8 grams of Silicon: - The number of atoms in 16.8 grams of Silicon (approximately 3.60 x 10^23 atoms) is approximately 2 times greater than the number of atoms in 16.8 grams of Iron (approximately 1.81 x 10^23 atoms).