1) A 0.416 g sample of KCl is added to 56.5 g of water in a calorimeter. If the temperature decreases by 1.24°C, what is the approximate amount of heat (in J) involved in the dissolution of the KCl, assuming the heat capacity of the resulting solution is 4.18 J/g°C? _____  J   2) Is the reaction exothermic or endothermic?

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A: given mass of KClO3 = 24.5 g mass of water = 200 g specific heat = 4.184 J/g-°C T1 = 15°C T2 = 6.6°C…

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Q: In a constant-pressure calorimeter, 70.0 mL of 0.340 M Ba(OH), was added to 70.0 mL of 0.680 M HCI.…

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Q: Consider the dissolution of CaCl2: CaCl2 (s) → Ca²+ (ag) +2 Cl¯(ag) AH=-81,5 kJ An 11.8-g sample of…

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Q: When 1.31 g of KClO3 was added to 138.34 g of water in a calorimeter, the  temperature dropped by…

A: mass of KCIO3 = 1.31 g mass of water = 138.34 g Temperature dropped = 0.506 °C Heat capacity of H2O…

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Q: When 129.0 g of 0.200 M NaCl(aq) at 22.0 °C is added to 212.0 g of 0.100 M AgNO3(aq) at 22.0 °C in a…

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Q: Enter your answer in the provided box. If 0.10 mol of ammonium chloride (NH,C) is dissolved in a…

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Q: Consider the enthalpy diagram below, and assume that AH_f> 0 for both A and B. Consider a reaction…

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Q: The temperature of 89.3  g of water rose from 17.3  °C to 38.6  °C during a chemical reaction. If…

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Q: A chemist dissolved an 12.9-g12.9-g sample of KOHKOH in 100.0 grams100.0 grams of water in a coffee…

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Q: The

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Q: A 5.71 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

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Q: Consider the dissolution of CaCl2 : CaCl2 (s) → Ca2+ (ag) + 2 C1-(ag) AH = -81.5 kJ An 11.7-g sample…

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Q: 2. Calculate the amount of heat required to raise the temperature of 950.0 mL of a solution from…

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Q: In a constant‑pressure calorimeter, 55.0 mL of 0.340 M Ba(OH)2 was added to 55.0 mL of 0.680 HCl.…

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