The molecules of Butane = 12.044× 10²³ molecule / g mol
First find out the number of moles of the C4H10
The number of moles = mass of the given molecules/ molecular mass of the molecule
The mass of molecules = 116.68 g
Molecular mass of C4H10 compound = 4×mass of carbon + 10 ×mass o of hydrogen
Molecular mass of C4H10 compound = 4×12 + 10 × 1
= 58 g/mol
Now substituting these values in the formulae to find out number of moles.
The number of moles = 116.68/58 mol
The number of moles = 2.0 mol
The number of molecules = Numbers of moles × Avogadro's Numbers
The number of molecules = 2.0 mol×6.022 × 10²³
The number of molecules = 12.044× 10²³ molecule / g mol
In 116.68 g of C4H10 there are 12.044× 10²³ molecules are present.
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