5.7744 g is the mass of the methane gas.
A mole is defined as 6.02214076 × [tex]10^{23}[/tex] of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
[tex]Moles = \frac{mass}{molar \;mass}[/tex]
[tex]0.36 mol = \frac{mass}{16.04 g/mol}[/tex]
Mass =5.7744 g
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