How many milliliters of water at 23 °C with a density of 1.00 g/mL must be mixed with 180 mL (about 6 oz) of coffee at 95 °C so that the resulting combination will have a temperature of 60°C? Assume that coffee and water have the same density and the same specific heat capacity (4.184 J/g.°C)

Q: A calorimeter contained 81.0 g of water at 15.49°C. A 104-g sample of iron at 63.54°C was placed in…

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Q: The enthalpy of solution (AH) of KOH is -57.6 kJ/mol. If 2.91 g is dissolved in enough water to make…

A: Given: Volume of solution = 150.0 mLDensity of solution = 1.02 g/mL.Enthalpy of solution of KOH =…

Q: A cubic piece of platinum metal (specific heat capacity = 0.1256 J/°C g) at 200.0°C is dropped into…

A: Answer: This question is based on the conservation of energy which suggests that energy lost by…

Q: A 48.4-g sample of an unknown metal at 100.0 °C is placed in a constant-pressure calorimeter…

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Q: A piece of calcite is heated to 72.0°C and placed in a styrofoam coffee cup containing 25.0 mL of…

A: GIVEN: The temperature of Calcite=72.0°C Volume of water= 25.0 mL The initial temperature of water=…

Q: How many milliliters of water at 21 °C with a density of 1.00 g/mL must be mixed with 220 mL of…

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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…

A: When a solute is dissolved in solvent to form a solution is called dissolution. It measures the…

Q: A common laboratory reaction is the neutralization of an acid with a base. When 40.3 mL of 0.500 M…

A: The volume of HCl = 40.3 mL OR 0.0403 L The molarity of HCl = 0.5 M The volume of NaOH = 75 mL or…

Q: 4. A 5.00 gram sample of an unknown metal was placed in a beaker of boiling water (99.58 °C). After…

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Q: 5.2 g of NaOH is added to a coffee cup calorimeter containing 861 mL of 1.10 M acid, where the acid…

A: Given molarity of acid = 1.10 M  Volume = 861 mL  Density of the solution = Density of water = 1.0…

Q: A student wishes to determine the specific heat capacity of a certain material. After she places…

A: We have to calculate the specific heat capacity of material.

Q: A 149.5-g sample of a metal at 75.5°C is added to 149.5 g H₂O at 15.6°C. The temperature of the…

A: Mass of Water, m = 149.5 gspecific heat of water, s = 4.184 J/goCinitial temperature, T1 = 15.6…

Q: A 148.8-g sample of a metal at 74.0°C is added to 148.8 g H2O  at 15.5°C. The temperature of the…

A: Specific heat- It is the amount of heat required to raise the temperature of 1g of substance by 10…

Q: They are all one question. When a solid dissolves in water, heat may be evolved or absorbed. The…

A: Given, When 5.21 g of CsClO4(s) are dissolved in 114.80 g of water, the temperature of the solution…

Q: A certain substance is dissolved in water inside of a coffee cup calorimeter. If the temperature of…

A: Since the temperature of the contents inside the calorimeter is increased, heat is absorbed by the…

Q: A scientist is attempting to determine the specific heat capacity of a newly discovered metal. To do…

A: We have to calculate the specific heat of metal.

Q: In a coffee-cup calorimeter, 120.0 mL of 1.1 M NaOH and 120.0 mL of 1.1 M HCl are mixed. Both…

A: Given, In a coffee-cup calorimeter, 120.0 mL of 1.1 M NaOH and 120.0 mL of 1.1 M HCl are mixed. Both…

Q: A 479.00 sample of an unknown metal at 96.75°C is placed in a calorimeter containing 139.00 mL of…

A: Given: Mass of an unknown metal = 479 g Volume of water = 139 mL Density of water = 1 g/mL Mass of…

Q: How many milliliters of water at 3.16°C with a density of 1.00 g/mL must be mixed with 180 mL (about…

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Q: Using a coffee cup calorimeter, determine the enthalpy of reaction (in kJ) if the reaction media is…

A: Volume of solution V = 150.0 mL  density = 1.000 g/mL  Therefore, mass of solution = 1.000 g/mL *…

Q: When 9.85 grams of potassium hydroxide (KOH) are dissolved in 150.0 grams of water at 25.0 °C in an…

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Q: A piece of unknown metal with a mass of 18.01 g is heated in boiling water to 98.9°C and then…

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Q: A piece of iron (mass = 25.0 g) at 398 K is placed in a styrofoam coffee cup containing 25.0 mL of…

A: Given,Mass of iron (m1) = 25 gInitial temperature of iron (Ti) = 398 KSpecific heat capacity of iron…

Q: A 60.86-g stainless steel ball bearing at 115.81°C is placed in a constant-pressure calorimeter…

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Q: The enthalpy of solution (dissolving) of sodium hydroxide is given below.  Determine the change in…

A: given  mass of NaOH = 5.00 g Volume of water = 150 ml enthalpy of solution (∆H) = -44.51 KJ To find…

Q: When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution…

A: Given:mass of CuCl2 = 3.88 gmass of H2O = 101.30 gTemperature change from 22.80 to 26.19 °Cheat…

Q: When a 12.8 g sample of NaOH(s) dissolves in 360.0 mL water in a coffee cup calorimeter, the…

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Q: coffee-cup calorimeter is filled with 150.0 mL of water at 22.1 °C. A piece of metal at 121.4 °C…

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Q: 150. g of water (Cs = 4.184 J/g°C) at 20.0 °C is added to a coffee cup calorimeter. A 35.0 g sample…

A: We use conservation of heat law in order to achieve equilibrium :- -Heat released by the solid =…

Q: A piece of copper metal (mass = 35.0 g) at 120 °C is placed in a Styrofoam coffee cup containing…

A: We have to calculate the final temperature of water

Q: How many milliliters of water at 31 °C with a density of 1.00 g/mL must be mixed with 95.0 mL (about…

A: Given: Initial temperature of water=31 degree celciusdensity =1.00g/mlvolume of coffee(m2)=95…

Q: the temperature increases from 23.0°C to ________°C.

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Q: A sample of 27.8 g of ammonium nitrate, NHẠNO3, was dissolved in 130.2 g of water in a coffee cup…

A: Given,  Mass of NH4NO3 = 27.8 g  Mass of water = 130.2 g  Initial temperature, Ti = 28.94 °C  Final…

Q: Calcium hydroxide is prepared by adding calcium oxide to water: CaO (s) + H2O (l) → Ca(OH)2 (s)…

A: Given, Calcium hydroxide is prepared by adding calcium oxide to water: CaO (s) + H2O (l) → Ca(OH)2…

Q: coffee-cup calorimeter, 100.0 mL of 1.1 M    NaOH and 100.0 mL of 1.1 M   HCI are mixed. Both…

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Q: In the following experiment, a coffee-cup calorimeter containing 100 g of H20 is used. The initial…

A: Determination of heat released by dissolution of CaCl2 as; Heat released by dissolution = 4 g110.986…

Q: A 1.200 g sample of ZnCO3 (s) dissolved in 40.0 mL of a dilute HCl solution (density = 1.10 g/mL) in…

A: The required equation is given below.

Q: A metal sample weighing 43.5 g and at a temperature of 100.0 °C was placed in 39.9 g of water in a…

A: Given : Mass of water = 39.9 g Mass of metal = 43.5 g Initial temperature of water = 25.1 oC Final…

Q: A 1.200 g sample of ZnCO3 (s) dissolved in 40.0 mL of a dilute HCl solution (density = 1.10 g/mL) in…

A: The reactants are zinc carbonate and dilute hydrochloric acid.

Q: A piece of titanium metal with a mass of 21.6 g is heated in boiling water to 99.5 °C and then…

A: Since the titanium metal is at a higher temperature, it will lose heat, and water inside the…

Q: When a 12.5 g sample of NaOH(s) dissolves in 367.0 mL water in a coffee cup calorimeter, the…

A: Heat of dissolution can be estimated in a calorimeter and is defined as the energy released to…