The ideal gas law PV = nRT relates pressure P. volume V temperature T. and number of moles of a gas, n. The gas constant Requals 0.08206 L-atm/(K-mol) or 8.3145 J/(K-mol). The equation can be rearanged as follows to solve form n= This equation is useful when dealing with gaseous reactions because stoichiometric calculations involve mole ratios Part A When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction What is the mass of calcium carbonate needed to produce 730 L of carbon dioxide at STP? Express your answer with the appropriate units. View Available in mass of CaCO, Value Submit Part B volume of CO₂ Submit Butane, CH is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is 2CH()+130 (s)-+800(s)+101,0) At 1:00 am and 23°C, what is the volume of carbon dioxide formed by the combustion of 3.40 g of butane? Express your answer with the appropriate units View Available in Provide Feedback A O? Value Units Ca00₂()+Ca0(s) +00₂(x) Units Review Constanta 1 Periodic Table Next >

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Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.