Solid HS is added to 280 ml of a 0.450M CaCl solution until no more CaS...
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Solid H₂S is added to 280 ml of a 0.450M CaCl₂ solution until no more CaS is formed (see reaction below). At the end of the experiment 5.50 g of CaS is formed. What is the percent yield for the reaction? Molar Masses: Ca (40.08), S (32.07), CI (35.45) CaCl₂ (aq) + H₂S(s) 2HCl(aq) + Cas(s) A Question 5 A system loses internal energy to the surroundings. Under which of the following conditions below will this always be true with respect to the system? E = q + w O All of the above Oq must be negative and w must be positive Oq must be positive and w must be negative Oq must be negative and w must be negative Oq must be positive and w must be positive 3 pts Question 6 3 pts A 9.45g piece of an unknown metal at 193.3 °C is placed into a coffee cup calorimeter containing 84.6g of water at 6.0 °C. After the metal is added to the water the temperature of the water climbs to 10.5 °C. What is the specific heat of the metal in J/(g°C)? Note: the specific heat of water is 4.18 J/(g°C). Solid H₂S is added to 280 ml of a 0.450M CaCl₂ solution until no more CaS is formed (see reaction below). At the end of the experiment 5.50 g of CaS is formed. What is the percent yield for the reaction? Molar Masses: Ca (40.08), S (32.07), CI (35.45) CaCl₂ (aq) + H₂S(s) 2HCl(aq) + Cas(s) A Question 5 A system loses internal energy to the surroundings. Under which of the following conditions below will this always be true with respect to the system? E = q + w O All of the above Oq must be negative and w must be positive Oq must be positive and w must be negative Oq must be negative and w must be negative Oq must be positive and w must be positive 3 pts Question 6 3 pts A 9.45g piece of an unknown metal at 193.3 °C is placed into a coffee cup calorimeter containing 84.6g of water at 6.0 °C. After the metal is added to the water the temperature of the water climbs to 10.5 °C. What is the specific heat of the metal in J/(g°C)? Note: the specific heat of water is 4.18 J/(g°C).
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4 Percent Yield Calculation The balanced chemical equation for the reaction is CaCl2aqH2Ss2HClaqCaSsCaCl2aqH2Ss2HClaqCaSs To calculate the theoretical ... View the full answer
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Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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