Question 2 of 10 A chemist has a block of copper metal (density is 8.96 g/mL). They drop the metal into a graduated cylinder con
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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 molar mass of gas = 238.29 g/mol
<h3>Further explanation</h3>Given
mass = 81.5 g
P=1.75 atm
V=4.92 L
T=307 K
Required
molar mass
Solution
The gas equation can be written
So the equation becomes :
Input the value :