The mass of C₂H₄ required to give 70.0 kJ of heat is 1.3 grams.
It is form of hydrocarbon belongs to alkene series. It is the starting material for producing polyethylene, comes from petroleum processing. It also occurs naturally as a fruit-ripening hormone and as a component of natural gas.
As we know that,
When 28 g of ethylene is burned it produces 1411 kJ/mol energy.
So, the 1 KJ/mol of energy released when 28/1411 gram of ethylene is burned.
The mass required to produce 1KJ/mol of energy = 0.019gram of ethylene.
Therefore, the mass required to produce 70 KJ energy = 0.019 × 70
= 1.3 gram of ethylene.
Thus, we calculated that 1.3 grams of C₂H₄ must be burn to give 70.0 kJ of heat.
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