Answer:

Explanation:
Given


Required
Determine P(x = 3)
This is calculated using:

So, we have:






Answer:
There are 1.806×10²⁴ atoms in 3 moles of iron.
Explanation:
Step 1:
Data obtained from the question
Number of mole of Fe = 3 moles
Number of atom =?
Step 2:
Determination of the number of atom.
From Avogadro's hypothesis, we understood that:
1 mole of Fe = 6.02×10²³ atoms
Therefore,
3 moles of Fe = 3 × 6.02×10²³ atoms
3 moles of Fe = 1.806×10²⁴ atoms
Thus, 3 moles of iron, Fe contains 1.806×10²⁴ atoms.
Please provide the options
The trace of a matrix A, designated by tr(A), is the sum of the elements on the main diagonal. The sum of the eigenvalues of a matrix equals the trace of the matrix.