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GSU CHEM 1211K - Chemistry Study Guide

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Enthalpy EquationsCalculate energy change with thermal energy transferred (q) & amount of work involved (w)∆ E= q+wCalculating thermal energy transferredQ=M∗Cs∗∆TRemember that a variable can be moved out of the equation and it can be converted into a fraction to determine the variable. M 2M 1∗Cs 1∗∆ T 1Cs 2∗∆ T 2Calorimeter ConceptRemember that if the law of thermodynamics holds true then the calorimeter will absorb all of the energy lost by the system. Therefore,CCalorimeter∗∆T +m∗∆ HCombustion=0Both the Change in HeatCombustion and the Calorimeter constant will be given. Enthalpy of Formation: The enthalpy of a reaction that produces 1 mol of the substance from its elements in the standard state.Find the product, flip the equation and then do the math to determine how many moles of the beginning substance are necessary in order to create a mol of the productGas LawsThe Ideal gas LawA gas behaves most ideally at low pressure and high temperatures. PV =nRTR=0.08206 L∗atm∗mol−1∗K−1n=PVRT=For calculating densityV =nRTP=For calculating densityCombined Gas LawP1V1T1=P2V2T2 Now hold pressure constant and you get Charles Law: V1T1=V2T2 Stoichiometryreactant1 mol of reactant¿equation∈kj[Reactant ∈kj](¿)(Amt . of limitting agent1 mol of final)(mm of limitting agent1 mol limitting


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GSU CHEM 1211K - Chemistry Study Guide

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