Explain what mass of ethane gas (c2h6) must burn

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What mass of ethane gas (C2H6) must burn in excess oxygen to produce 2.00 x 103 kJ of heat, given the thermochemical equation

2C2H6(g) + 7O2(g) ? 4CO2(g) + 6H2O(l) ?H = -3.12 x 103 kJ

1.) 0.641 g 2.) 19.3 g 3) 38.6 g

4. heat is not produced by this reaction

5. none of these

Reference no: EM13655114

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