Find Hrm for the following reaction: 2PbS(s)+3O2(g)2PbO(s)+2SO2(g) Use the following reactions with known H values: 2H2S(g)S(s,rhombic)PbO(s)+O2(g)+O2(g)+H2S(g)2S(s,rhombic)SO2(g)PbS(s)+2H2O(g)+H2O(g)H=296.8kJH=442.4kJH=104.3kJ Express the energy to one decimal place and include the appropriate units. Tho ideal gas law PV=nRT When heated, calcium carbonate decomposes to yield caloium oxide and carbon dioxide gas via the reaction relates pressure P, volume V, temperature T, and number of moles of a gas, n. The gas constant R equals 0.09206Lstm/(Kmol) or 8.3145 CaCO3(s)CaO(y)+CO2(g) J/(K : mol ). The equation can be rearranged as follows to solve for f : n=RTPV What is the mass of calilum carbonate needed to produce 83.0 L. of carbon dioxide at STP? Express your answer with the appropriate units. This equation is usetul when cealing with gaseous reactions because stoichiometrio calculations involve mole rabios. Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The balanced equation of the complete combustion of butane is 2C4H10(g)+13O2(g)8CO2(g)+10H2O(l) At 1.00atm and 23C, what is the volume of carbon dioxide formed by the combustion of 2.00g of butane? Express your answer with the appropriate units