Given the following information, calculate the heat of solution for the salt in the unit of kJ. A calorimeter contains 44.96 g of water. The temperatures of the calorimeter and water are both 22.6 degrees Celsius. 2.42 g of salt is dissolved in the water. Then, the temperature falls to (2.1x10^1) degrees Celsius. (Note: the heat capacity of this calorimeter is 30.1 J/degree Celsius. Pay attention to the sig. figs. in your calculation.)

Q: A coffee-cup calorimeter having a heat capacity of 472 J/°C is used to measure the heat evolved when…

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Q: density of water = 1.00 g/ mL The enthalpy changes when a strong acid is neutralized by strong base…

A: Given molar enthalpy of neutralization = - 56.1 kJ/mol  The thermochemical equation can be written…

Q: Express the quantity in the unit indicated and designate whether this heat is gained or lost by the…

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Q: When 0.395 g of sodium metal is added to an excess of hydrochloric acid, 4110 J of heat are…

A: Given: Weight of sodium metal is 0.395 g Heat produced is 4110 J The given reaction is,…

Q: 1) What is the specific heat capacity of an unknown metal if 75.00 g of the metal absorbs 418.6J of…

A: For Part: Given:mass of unknown metal, m = 75gHeat absorb by unknown metal, ∆H= 418.6JIncrease in…

Q: If a system absorbs 155.0 kJ of heat from its surroundings and the system does 65.0 kJ of work on…

A: Given that, System absorb heat, so q is positive, so,  q=+155.0 KJ also given, system does work, so…

Q: A 25.0-mL sample of benzene at 20.4 °C was cooled to its melting point, 5.5 °C, and then frozen. How…

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Q: A sample of iron absorbs 62.3 J of heat, upon which the temperature of the sample increases from…

A: The amount of heat required is related to specific heat capacity as,…

Q: To the cooled anhydrate, CuSo4, of part 1 a student added about 5 MLS of distilled water and then…

A: We are to discuss whether rehydration of anhydrous CuSO4 exothermic or endothermic.

Q: The enthalpy changes when a strong acid is neutralized by strong base is –56.1 kJ/mol. If 135 mL of…

A: Given, Enthalpy change when strong acid is neutralised by strong base = -56.1 KJ/mol Volume of HI =…

Q: A chemist placed a 1.195 g sample of fuel in a bomb calorimeter which was immersed into 2.00 L of…

A: The mass of the fuel sample is = 1.195 g The increase in the temperature of the water is = 20.1oC to…

Q: When 23.6 g of calcium chloride, CaCl, was dissolved in water in a constant-pressure calorimeter,…

A: The mass of calcium chloride is = 23.6 g Increase in the temperature of the calorimeter is =…

Q: Magnesium metal reacts with HCl according to the following balanced equation: Mg(s)  +      2 HCl…

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Q: What is the change in internal energy of a system that has 275 kcal of work done to it and it…

A: Internal energy is a function of the volume and the temperature. In a closed system of constant…

Q: Consider the reaction C12H22011 (s) + 12 O2 (g) → 12 CO2 (g) + 11 H20 (1) in which 11 g of sucrose,…

A: Given data: Mass of sucrose m =11g, Heat capacity C = 7.50 kJ/ o C Change in temperature dT = 21.6 o…

Q: What is the kinetic energy (in J) of a 2240-pound automobile traveling at 67.8 km per hour? x 10 J

A: For an Automobile, Mass, m = 2240 pound  Velocity = 67.8 km hr-1  Kinetic Energy, Ek = ?

Q: In a calibration of a calorimeter, 50.3 g of water at 60.5 degrees celsius is added to 48.7 g of…

A: Given : mass of cold water = 48.7 g Mass of hot water = 50.3 g Initial temperature of hot water =…

Q: If the monthly electricity consumption of a household is 6,619 kWh, what is this consumption…

A: 1 kWh = 3600 kJ

Q: Determine the total heat evolved in Joules in a solution of 19 mL of NAOH and 19 mL of HCI…

A: Given, Volume of NaOH = 19 mL Volume of HCl = 19 mL Initial temperature, Ti=26.8°C Final…

Q: Consider the dissolution of ammonium nitrate according to the following equation: NH,NO3(s) → NH,…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3 sub-parts. Please resubmit the…

Q: КОН, heat ETOH H,0(1), heat CH2 NH,(aq), heat HCN, heat ETOH KOH(aq), heat

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Q: If a system absorbs 155 kJ of heat from its surroundings and the system does 45 kJ of work on its…

A: Given, Amount of heat absorbs by the system q = 155 kJ work done by the system W = 45 kJ We are…

Q: what quantity of heat energy must have been applied to a block of aluminum weighing 38.4g of the…

A: The total heat required (Q) is determined as follows. Q=mAlcAl∆T ...... (1)

Q: During an experiment, 25 g of 0.32 M Ca(NO3)2 at 42°C is added to 103 g of 0.82 M HNO3 at 37°C in a…

A: 25 g of 0.32 M Ca(NO3)2 at 42◦ C are mixed with 103 g of 0.82 M HNO3 at 37◦ C . The increase in…

Q: Condensation of water in the air is an important process in determining the climate of an area. When…

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Q: A 15.0-mL sample of benzene at 21.0 °C was cooled to its melting point, 5.5 °C, and then frozen. How…

A: Calculate the mass of benzene from density,

Q: When 0.670 g of sodium metal is added to an excess of hydrochloric acid, 6970 J of heat are…

A: moles= mass/molar mass 2 Na(s) + 2 HCl(aq)-----> 2 NaCl(aq) + H2(g)                  Or  Na(s) +…

Q: You add some of the white crystals to a small test tube filled with water. The water in the test…

A: This can be calculated by specifi heat formula, CP = (dH/dT)P dH = Enthalpy change  dT = Temperature…

Q: When 145 mL of 0.212 M NaCl(aq) and 145 mL of 0.212 M AgNO3(aq), both at 21.1°C, are mixed in a…

A: Moles of AgNO3 = Molarity× Volume = 0.212 M × (145/1000)L = 0.03074 moles

Q: In a far planet from earth, a balloon containing a certain gas expands from 100 L to 250 L by…

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Q: If a system does 84.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…

A: From first Law of Thermodynamics , the total change in internal energy of the system can be…

Q: A beaker of hot water with a volume of 43.9 mL has an initial temperature of 94.3 °C. You place a…

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Q: When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises…

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Q: A gas expands and does work on the surroundings equal to 2.17 L atm. At the same time, it releases…

A: First law of thermodynamics It states that the internal energy of a system is equal to the heat…

Q: When 135 mL of 0.204 M NaCl(aq) and 135 mL of 0.204 M AgNO3(aq), both at 21.5°C, are mixed in a…

A: Coffee cup calorimeter is a steady pressure calorimeter. As such, the heat measured in such a system…

Q: What is the resulting temperature in celsius when 35 g of water at 75 degrees celsius is mixed with…

A: Given, 35 g of water at 75 degrees celsius is mixed with 15 g of waterat 15 degrees celsius.The…

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

A: In order to find the amount of heat transferred we first write down the given data: Mass= 105 g. c=…

Q: When 130. mL of 0.198 M NaCl(aq) and 130. mL of 0.198 M AgNO3(aq), both at 21.8°C, are mixed in a…

A: When the system release energy then the process is known as exothermic. When the system absorbs…

Q: An exothermic reaction liberates 7.58 kJ of heat in a coffee cup calorimeter containing 157 grams of…

A: A 157 grams solution has a specific heat of 4.184 J/g ◦C and temperature of the solution is…

Q: A 15.0-mL sample of benzene at 20.7 °C was cooled to its melting point, 5.5 °C, and then frozen. How…

A:

Q: A gas is compressed and during this process the surroundings do 142 J of work on the gas. At the…

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Q: The enthalpy changes when a strong acid is neutralized by strong base is –56.1 kJ/mol. If 135 mL of…

A: So we will calculate the maximum temperature reach by the solution.

Q: To the cooled anhydrate, CuSO4, of Part I, a student added about 5 mL of distilled water and then…

A: This is an exothermic reaction. when water is added to anhydrous white crystal of copper sulphate…

Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used…

A: Wt. of lead = MPb = 19.61 gInitial temperature of lead = TPb =97.01°CMass of water = M = 82.14…

Q: Aluminum and iron samples, each weighing 2 kg, absorb 11.5 kJ of heat. Which material would have the…

A: The amount of heat required to increase the 1oC temperature of 1 g metal is known as the specific…

Q: The enthalpy change when a strong acid is neutralized by strong base is –56.1 kJ/mol.  If 12.0 mL of…

A: Given : concentration of HBr = 6 M and volume of HBr solution = 12 mL = 0.012 L…

Q: When 100 mL of 0.200 M NaCl(aq) and 100 mL of 0.200 M AgNO3(aq), both at 21.9 °C, are mixed in a…

A: Given that  Initial temperature = 21.9 °C Final temperature = 23.5 °C To calculate the amount of…

Q: Determine the total heat evolved in Joules in a solution of 20 mL of NaOH and 19 mL of HCI…

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Q: The heat capacity of an object depends on its mass and its composition. The heat capacity of one…

A: Specific heat is the amount of heat required to produce a change of 10C in exactly 1 g of substance.…