10. You need a water bath at 37.0 °C. The temperature of the cold tap water is 22.0 °C and the temperature of the hot tap water is 55.0 °C. What mass of hot water must be added to 90.0 g of cold water to reach 37.0 °C? The specific heat of H2O is 4.18 J/g•°C.

Q: A 110.0-g sample of a gray-colored, unknown, pure metal was heated to 92.0 oC and put into a…

A: Assuming specific heat of metal is C. Since all the heat released by metal in reaching the final…

Q: Sodium chloride is added in cooking to enhance the flavor of food.  When 10.0 g of NaCl is…

A: Given that 669 J of heat is absorbed. q = +669 JAs heat is absorbed in the reaction from water in…

Q: 4. What mass of water would absorb 7.00 × 10² cal of heat if the temperature is increased from…

A: Heat of a reaction is defined as the heat  produces or absorbed during the reaction which can be…

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A:

Q: In a coffee-cup calorimeter, 140.0 mL of 1.3 M  NaOH and 140.0 mL of 1.3 M  HCl are mixed. Both…

A: In this whole process, the heat given out by the reaction is gained by the solution and as a result,…

Q: CaO(s) reacts with water to form Ca(OH)2(aq). If 6.66 g CaO is combined with 99.84 g H2O in a coffee…

A: Given data,Mass of CaO=6.66gMass of water=99.84gInitial temperature=20oCFinal…

Q: In a coffee-cup calorimeter, 29.8 g sample of solid KCl is dissolved in 100.0 g of water at 15.0 °C.…

A: Heat of solution :- It is measured by the change of enthalpy during formation of solution. This can…

Q: A 44.3 g sample of water at 100.00 °C (specific heat of water = 4.184J/g.°C) was placed in an…

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Q: A piece of unknown metal with a mass of 26.4 g is heated to 92.2 C . When added to 50.00 mL of water…

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Q: A 50.0 g sample of liquid water at 25 °C is mixed with 44.7 g of water at 45.0 °C. What is the final…

A:

Q: When 636.5 J of heat energy is added to a 43.0 g sample of solid copper, the temperature increases…

A: This problem is based on Thermo chemistry which is a very important subpart of Thermodynamics. Here…

Q: A 4.77 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A:

Q: In a coffee-cup calorimeter, 23.8 g sample of solid KBr is dissolved in 100.0 g of water at 15.0 °C.…

A: Given mass of water = 100 g Mass of KBr = 23.8 g Molar mass of KBr = 119 g/mol specific heat (C) =…

Q: When 108 g of water at a temperature of 23.1 °C is mixed with 66.1 g of water at an unknown…

A:

Q: thermal energy

A:

Q: When 46.0 g of an unknown metal at 28.5°C is placed in 94.0 g H2O at 78.5°C, the water temperature…

A: Given For unknown metals mass of unknown metal (mmetal) = 46.0 g Initial temperature of metal (Ti) =…

Q: A 31.74-g lead (Pb) sample at 71.58°C is placed in a constant-pressure calorimeter of negligible…

A: Given, A 31.74-g lead (Pb) sample at 71.58°C is placed in a constant-pressure calorimeter of…

Q: 151.0-g sample of a metal at 75.0°C is added to 151.0 g H20  at 14.2°C. The temperature of the water…

A: Solution:     Specific heat is defined as the amount of heat required to raise the temperature of a…

Q: A 149.6-g sample of a metal at 75.0°C is added to 149.6 g H2O  at 14.0°C. The temperature of the…

A: Given For metal, mass(m)=149.6 g Initial temperature(Ti)=75℃ Final temperature(Tf)=30℃ Specific…

Q: b) Predict the microstate table for the s'd' configuration. Assign the ground state term symbol.

A: Microstates are the different arrangements in which the electron can exist in their shells.

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…

A: Mass of unknown salt = 5.71 gMolar mass of unknown salt = 116.82 g/molAmount of water = 150.00…

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: Given, Mass of unknown sample ,ms=4.81 g  mass of water, mw= 150 g initial temperature Ti=23.72°C…

Q: In a coffee-cup calorimeter, 100 mL of 1.0 M NaOH and 100.0 mL of 1.0 M HCI are mixed. Both…

A: Molarity of NaOH = 1.0 M  Volume of NaOH solution = 100.0 mL = 0.100 L  Molarity of HCl = 1.0 M…

Q: An unknown metal has a mass of 88.0 g. When 2440 J of Metal Specific heat (J/g • C) heat are added…

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Q: 1. In an experiment to determine the Specific Heat of Nickel, a 66.0 g sample of Nickel metal is…

A: Answer :-  The specific heat of Nickel determined by the experiment = 0.544 J/g.°C…

Q: The temperature of an object increases by 39.4 °C when it absorbs 3715 J of heat. Calculate the heat…

A: Given, Mass of the object (m) = 393 g Change in temperature (∆T) = 39.4 °C  Heat absorbed (Q) = 3715…

Q: In a coffee-cup calorimeter, 130.0 mL of 1.0 M  NaOH and 130.0 mL of 1.0 M  HCI are mixed. Both…

A: Q = m . s . (T2 - T1) DeltaH = Q/Number of mols of HCl or NaOH

Q: When a 43.0 g sample of metal at 100.0 oC is added to 38.0 g of water at 23.72 oC, the final…

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Q: In a coffee-cup calorimeter, 110.0 mL of 1.3 M and 110.0 mL of 1.3 M are mixed. Both solutions were…

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Q: A 93.82 g bar of iron was heated to 98.4 °C and then dropped into 38.1 mL of water at 15.3 °C.  The…

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Q: A 6.55 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: A student mixes 67.0 mL of a 2.01 M sodium hydroxide solution with 22.4 mL of 6.45 M hydrochloric g…

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Q: A 28.602 g sample of a metal is heated to 99.9°C in a hot water bath until thermal equilibrium is…

A: Let c be the specific heat of the metal Heat lost by the metal = mass x specific heat x temperature…

Q: 22.9 mL of an unknown acid was neutralized by mixing it with 50.3 mL of NaOH in an aqueous solution.…

A: Since the temperature of the solution is increased from 22.0 oC to 35.2 °C, heat is released by the…

Q: A chemist dissolved an 10.8-g sample of KOH in 100.0 grams of water in a coffee cup calorimeter.…

A: Here we are required to find the enthalpy of solution of KOH in the unit of kJ/mol

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A: Step 1: In the titration, the point at which the amount of titrant added is just enough to…

Q: A 45.90 g sample of pure copper is heated in a test tube to 99.40°C. The copper sample is then…

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Q: A 350.0 g iron pot is heated on a stove for a period of time until it is hot. The stove is turned…

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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: A 29.00 g sample of metal alloy is heated to 92.6 °C; then placed in 55.23 g of water in an…

A:

Q: A 138.9 g sample of an unknown metal at a temperature of 99.1 °C is added to 44.72 g of water at a…

A: Q = mC∆T

Q: The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.134 g sample of NH4Cl is added to…

A: The objective of this question is to determine the minimum temperature reached by the solution.

Q: 22.214 g of a metal at 99.73°C was added to 14.2 g of water at 19.05°C. The temperature of the…

A: Given: Mass of metal = 22.214 g Initial temperature of metal = 99.73 °C  Mass of water = 14.2 g…

Q: A student heats 84.17 mL of water to 95.27°C using a hot plate. The heated water is added to a…

A: It is given that 84.17 mL of hot water at a temperature of 95.27°C is added to 73.92 mL of cold…