Answer:
The number of moles of O atom in
mol of
= 1.6
Explanation:
1 molecule of
contains 2 atoms of O
So,
molecules of
contains
atoms of O.
We know that 1 mol of an atom/molecule/ion represents
numbers of atoms/molecules/ions respectively.
So,
molecules of
is equal to 1 mol of
.
atoms of O is equal to 2 moles of O atom.
Hence, 1 mol of
contains 2 moles of O atom.
Therefore,
mol of
contains
moles of O atom or 1.6 moles of O atom.
The decrease in velocity is called deceleration or negative acceleration.
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To answer the question above, we take note first that every mole of PCl₃ contains 3 atoms of Cl. First, we divide the given number by 3.
3.68 x 10²⁵ / 3 = 1.227 x 10²⁵
Then, we divide the answer by the Avogadro's number which is equal to 6.022 x 10²³. That is,
1.227 x 10²⁵ / (6.022 x 10²³) = 20.37
Thus, there are 20.37 mol of PCl₃.