The table lists the specific heat capacities of select substances. Substance Specific heat capacity (J/g °C) lead 0.128 silver 0.235 copper 0.385 iron 0.449 aluminum 0.903 water 4.184 An unknown substance has a mass of 16.1 g. The temperature of the substance increases by 18.7 ∘C when 70.8 J of heat is added to the substance. What is the most likely identity of the substance? copper silver iron lead aluminum water

Q: A student wishes to determine the heat capacity of a coffee-cup calorimeter. After mixing 125 g of…

A: Answer:- This question is answered by using the simple concept of calorimetry which states that heat…

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: A 140.0 g sample of water at 25.0C is mixed with 114.0 g of a certain metal at 100.0 °C. After…

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Q: Which sample will reach the lowest final temperature when all samples evolve 12.5 J of heat and all…

A: Since, Q =m.c.St WHERE Q = heat energy M =mass of metal C= specific heat of metal Triangle T =…

Q: When 107 g of water at a temperature of 23.5 °C is mixed with 65.8 g of water at an unknown…

A: According to the data given in the question,Weight of water at 23.5℃ (296.5 K) = 107 gWeight of…

Q: calorimeter containing 837 mL of 1.10 M acid, where the acid has a 1 to 1 molar ratio with sodium…

A: We will calculate ∆H in Kj/mol

Q: emist carefully measures the amount of heat needed to raise the temperature of a 360.0 g sample of a…

A: Specific Heat capacity is amount of heat required to increase the temperatures of one gram of…

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: Heat capacity : heat capacity, ratio of heat absorbed by a material to the temperature change. It is…

Q: 1. How much energy, in Joules, would it take to heat up 80.0 g of water from 25 °C to 35 °C?

A: Note: Since you have posted multiple questions, we will provide the solution only to the first…

Q: If 63.50 g of an unknown metal at 97.6 °C initially produced a resulting temperature of 39.5 °C when…

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

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.53 kg sample…

A: We know that  Q = m*s*ΔT        ----------(1) Where, Q is heat energy               m is mass of…

Q: Two amounts of 50.0 g of water, at 13.0 and 55.0 °C, respectively, were mixed inside a cup. If the…

A: heat capacity = m C ΔT m = 50 g C = 4.18 J/g c ΔT = 55-13 = 42 c

Q: A sample of copper absorbs 43.6 kJ of heat, resulting in a temperature rise of 40.0°C, determine the…

A: From thermodynamics: q=m.c.∆T                                              . . . (1) Here, q is the…

Q: The change in enthalpy (heat of solution) for ammonium nitrate dissolving in water is 25.7 kJ/mol.…

A: Given,  The change in enthalpy (heat of solution) for ammonium nitrate dissolving in water is 25.7…

Q: The change in enthalpy (heat of solution) for ammonium nitrate dissolving in water is 25.7 kJ/mol.…

A: Molar mass of ammonium nitrate =80.043g/mol

Q: A constant pressure (or coffee cup calorimeter) contains 125g of water at a temperature of 24.2°C.…

A: Given , mass of water = 125 ginitial temperature, Ti=24.2°Cmass of KBr added = 10.5 gFinal…

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: Consider the following reactions:                  C2H6 (g)  +  7/2 O2 (g)  →  2 CO2 (g)  +  3 H2O…

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Q: A student performs a calorimetry experiment. The student combines 100. g of 0.40 M HC1(aq) with 100.…

A: Heat absorbed by the particular species = mass × heat capacity × temperature change

Q: 4. How much will the temperature of a cup (180 g) of coffee at 95 °C be reduced when a spoon…

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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: The heat of combustion for a sample of coal is 24.0 kJ/g. What quantity of coal (in grams) must be…

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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: D4, is used Calculate 10, from 25 perature of heat lorate is

A: Heat(Q) = mass(m) • specific heat capacity (C) • ( T2 - T1 )  Where : specific heat capacity =…

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…

Q: 20 g of chocolate was combusted completely in a calorimeter with 100 mL of water inside. The…

A: Given data is Mass of chocolate combusted = 20 g Volume of water  in a calorimeter = 100 mL  The…

Q: A student heats 68.15 grams of silver to 98.73 °C and then drops it into a cup containing 78.21…

A: All the information is given in question  Mass of silver and temperature  Mas software water and…

Q: A 24.6 g sample of a metal is heated to 110.0°C and then placed in a coffee cup calorimeter…

A: Answer: This is the question based on energy conservation, one object is losing the heat and other…

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…

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Q: A piece of unknown metal with a mass of 22.03 g is heated in boiling water to 90.34°C and then…

A: Given;

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: 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: The table lists the specific heat values of several substances. An unknown substance has a mass of…

A: Heat energy is given byq = m * C * ΔTwhereq = heat energym = mass of the substanceC = specific heat…

Q: propane (C:H8) produces 2220 kJ of = consumed. What mass in grams of eat 55.0 gal of bathtub water…

A: According to the question, the combustion of propane will produce 2220 kJ of energy per mole.  We…

Q: The standard enthalpy change for the following reaction is -56.0 kJ at 298 K. Na(s) + 1/2 H₂(g)…

A: Important points needs to be remember for enthalpy change If a given chemical reaction is reversed…

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: 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 student wishes to determine the heat capacity of a coffee-cup calorimeter. After she mixes 90.5 g…

A: Calculation of heat released by the hot water: Q=mc∆T=90.5 g×4.184 J/g°C×(35.0-67.5)°C=-12306.2 J

Q: A 6.57 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A mixture was prepared in a 500 ml reaction vessel from 367 mL of O2 (measured at 24.7 °C and 670…

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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 6.61g sample of an unknown salt (MM=116.82g//mol) is dissolved in 150.00g water in a coffee cup…

A: The hear transfer (q) in a process is given by           Where, q = amount of heat transfer…