Answer:
3.63 x 10²³molecules
Explanation:
Given parameters:
Mass of methane = 9.65g
Unknown:
Number of molecules = ?
Solution:
To solve this problem first, we find the number of moles of the given compound or molecule first.
The given molecule is methane;
CH₄;
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of CH₄ = 12 + 4(1) = 16g/mol
Number of moles = [tex]\frac{9.65}{16}[/tex] = 0.603moles
So;
From mole concept;
1 mole of a substance contains 6.02 x 10²³ molecules
0.603moles of methane will contain 0.603 x 6.02 x 10²³
= 3.63 x 10²³molecules
