Respuesta :
The amount of heat produced if 8.65 moles of ethane undergo complete combustion is 12433 kJ.
From the question,
We are to determine the amount of heat produced if 8.65 moles of ethane undergo complete combustion.
From the given information
We have that
The heat of combustion for ethane is 47.8 kJ/g
First, we will determine the mass of 8.65 moles of ethane
Using the formula
Mass = Number of moles × Molar mass
Molar mass of ethane = 30.07 g/mol
∴ Mass of the ethane = 8.65 × 30.07
Mass of the ethane = 260.1055 g
From the question,
We have that, the heat of combustion for ethane is 47.8 kJ/g.
This means 1 g of ethane produces 47.8 kJ of heat.
Now
If 1 g of ethane produces 47.8 kJ of heat
Then,
260.1055 g of ethane would produce 260.1055 × 47.8 kJ of heat
260.1055 × 47.8 kJ = 12433.0429 kJ ≅ 12433 kJ
Hence, the amount of heat produced if 8.65 moles of ethane undergo complete combustion is 12433 kJ.
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