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if 114 kilo joule is given off per mole of

If 114 kilo joule is given off per mole of Ethylene reacting, determine how much heat is released when 14.8 kilo grams of Ethylene forms?

Determine the mass of Mg(magnesium,) in reaction with an excess of HCl(hydrochloric acid,) is required to form hydrogen(H2) gas of 128ml ? The Hydrogen gas is collected over H2O(water) at a temperature of twenty five degree celsius and a total pressure =762 mmHg. (The ideal gas law constant R = 0.0821L*atm/K*mol.)

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