Sodium chloride, the table salt (NaCl) is added in cooking to enhance the flavor of the food. When 10.0 g of NaCl are added in 200.0 mL of water at 25.0 C in a coffee-cup calorimeter, 669 J of heat are absorbed. (Assume that there is no change in volume, d=1.00 g/mL,, specific heat=4.18 J/g.C) a) Is the solution process exothermic? b) What is qH2O ? c) What is the final temperature of the solution?

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Q: How much heat (in joules) is used to heat an 80.88-gram sample of iron from 3.59 °C to 100 °C if the…

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Q: A 7.37 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: If 1001 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g･°C)…

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Q: 2. A solution is formed by combining 10 mL of solution A and 40 mL of solution B. Find out the heat…

A: We know that  Heat change of the reaction is  Qreaction = - Q calorimeter  = - m × C × ∆T And, the…

Q: A 7.03 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: We know during the process of any reaction, heat gained  = heat lost . For above the formula used…

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A: The change in temperature taking place is,

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Q: 3. How many joules of heat are required to raise the temperature of a 1420 g block of copper from…

A: 1)  Mass of block of copper        = 1420 gram         Specific heat of Copper ( c ) = 0.385 Joule /…

Q: In order to change the temperature of 147 g of lead from 22 o C to 55.oC, how many Joules are…

A: Q = mc∆T Q = heat M = mass C = specific heat capacity ∆T = change in Temp.   M = 147 g ∆T = Tfinal –…

Q: 2.3 g of copper is heated.  The amount of energy transferred by heat to the copper is 57,225 J.  If…

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Q: How many kilojoules of heat are absorbed when 40.7 g of MgO(s) is decomposed into Mg(s) and O2(g) a…

A: The reaction given is, => 2 Mg (s) + O2 (g) ------> 2 MgO (s)                          ΔH =…

Q: When a 4.25 g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee- cup…

A: 1) Since the temperature of the water in coffee-cup calorimeter is decreasing from 22 to 16.9 oC…

Q: how many grams of iron

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Q: 5. If 769J of heat is absorbed when 50g of iodine is heated from 70°C to 95°C, then what is the…

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Q: A 22.0 g block of copper at 45'C absorbs 2.50 kJ of heat. Given the specific heat of Cu is 0.385…

A: given :-  mass of Cu = 22.0 g  specific heat of Cu = 0.385 J/g°C  initial temperature = 45 °C  heat…

Q: A 7.37 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Given, Mass of sample = 7.37 gMass of water = 150 g Mass of solution = 157.37 g Initial temperature…

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Q: a 15.0 g lead ball at 25.0 was heated with 40.5 joules of heat. Given the specific heat of lead is…

A: Given : Mass of lead = 15.0 g Initial temperature of lead = 25.0 oC Specific heat of lead = 0.128…

Q: If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.45 J/g･°C) that…

A: Q = heat =801 J ΔT = change in temperature = (120 - 22.5) = 97.5 oC c = Specific heat = 0.45 J/goC…

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Q: A 45g silver spoon (specific heat 0.24 J/g.°C) at 25 °C is placed in 180 g of coffee at 95 °C and…

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Q: Hydrogen sulfide, H2 S, is produced during decomposition of organic matter. When 0.4300 mol H2S…

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Q: Given that 158.05 g of solution increased in temperature by 4.82 "C. how much heat was gained by the…

A: Given that: Mass of solution=158.05grams Change in temperature=4.82°C Specific heat of…

Q: If 1001 J of heat is available, how many grams of iron (specific heat = 0.45 J/g･°C) can be heated…

A: The equation is:

Q: 1. The temperature of 13.5g of water increased from 15.0°C to 37.0°C. How much heat was absorbed by…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: If 601 J of heat is available, how many grams of iron (specific heat = 0.45 J/g･°C) can be heated…

A: The amount of available energy is = 601 J The specific heat of iron is = 0.45 J/g･°C Increase in the…

Q: If 171.4 grams of water must be heated from 8.00°C to 85.0 °C to make a cup of tea, how much heat…

A: The solution is as follows :

Q: what is the mass in grams of iron

A:

Q: A gas sample does 214 J of work upon expanding and the cools, losing 34 J of heat. What is the total…

A: The first law of thermodynamics is given asΔU=Q−W, Δ U = Q − W , whereΔU is the change in internal…

Q: Hydrogen sulfide is produced during the decomposition of organic matter. When 0.5380 mol H2S burns…

A: Given: H2S burns to produce SO2(g) and H2O(g) with heat release of -278.7 kJ

Q: rogen sulfide, H2S, is produced during decomposition of organic matter. When 0.4190 mo H2S burns to…

A: Given, Heat released = -217.0 KJ

Q: heat

A:

Q: What is the specific heat of solid iron when a 15.75 gram sample gains 1,086.75 Joules of heat…

A: The calorimetry method is used the find the total amount of heat transferred in a system. In this…

Q: What is the heat, q, in joules transferred by a chemical reaction to the reservoir

A: Given :-  mass = 155 g  Initial temperature = 22.0°C  Final temperature = 26.5 °C  Specific heat…

Q: 2. A solution is formed by combining 10 mL of solution A and 40 mL of solution B. Find out the heat…

A: 2). given : 10 ml solution of A  40 ml solution of B

Q: -Calorimetry Questions 1. A 24.6 g sample of nickel is heated to 110.0 °C and then placed in a…

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Q: The specific heat of aluminum is .900J/g degree C, what is its molar specific heat?

A: The specific heat of aluminium=0.900 J/goC Mass of 1 mol of aluminium= 26.98 g Molar heat capacity…

Q: Magnesium sulfate is often used in first-aid hot packs, giving off heat when dissolved in water. A…

A: Given:Volume of water=15.0 mLMass of MgSO4=2.00 gHeat evolved=1.51 kJDensity of solution=1.00…

Q: What is the energy change of a system as it does 12 J of work and absorbed 27 J of heat?

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Q: 2. A solid substance has a mass of 250 grams. It is cooled by 25.00°C and loses 4.937 kJ of heat.…

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Q: If 601 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g.°C) that…

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Q: A 4.81 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Mass of unknown salt = 4.81 g Molar mass of unknown salt = 116.82 g / mol Moles of unknown salt…

Q: A 8.17 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Mass of salt sample = 8.17 g Mass of water = 150 g Total mass of solution ( m ) = 8.17 g + 150 g =…

Q: A gas does 135 J of work while expanding, and at the same time it absorbs 156 J of heat. What is the…

A: Thermodynamics is the study of heat in motion.

Q: Hydrogen sulfide, H2S, is produced during decomposition of organic matter. When 0.3620 mol H2S burns…

A: Given :-  H2S (g) + O2 (g) → SO2 (g) + H2O (g)  ∆H = -187.5 kJ  To calculate :-  Given heat into…

Q: How much heat, in joules, must be added to a 5.00 × 102-g iron skillet to increase its temperature…

A: The heat is given by: q = m × c × ∆Tq = heatm = massc = specific heat∆T = change in temperature

Q: When a 6.50 g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup…

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