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Q4: When 135.8 g of NaCl are added to a solution containing 195.7 g of Pb...

Q4: When 135.8 g of NaCl are added to a solution containing 195.7 g of Pb 2+ , a PbCl2 precipitate forms. The precipitate is filtered and dried and found to have a mass of 252.4 g. Determine the limiting reactant, theoretical yield of PbCl2 and percent yield for the reaction

. Q5: Calculate the heat evolved in (kJ) upon complete combustion of 25.0 g methane (CH4 ) Enthalpy of reaction for the reaction is ­802 kJ

Q6: The enthalpy of reaction is ­906 kJ when ammonia gas reacts with oxygen gas. Write the balanced equation and calculate the heat of enthalpy if 155 g of ammonia completely reacts.

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