A hot 101.7101.7 g lump of an unknown substance initially at 184.9184.9 °C is placed in 35.0 mL of water initially at 25.0 °C and the system is allowed to reach thermal equilibrium. The final temperature of the system is 86.486.4 °C. Substance Specific heat (J/(g·°C)) aluminum 0.897 graphite 0.709 rhodium 0.243 titanium 0.523 tungsten 0.132 zinc 0.388 water 4.184 Using this information and the specific heat values for several metals in the table, identify the unknown substance. Assume no heat is lost to the surroundings. a) zinc b) graphite c) titanium d) tungsten e) rhodium f) aluminum

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…

A:

Q: A 2.00 g sample of a salt (MX(s)) is added to 20.0 g of water at 22.0 °C in a calorimeter. The…

A: Given that, a 2.00 g of a sample of a salt MX(s) is added to a 20.0 g of a water at 22.0oC. So, the…

Q: issolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can…

A: We have to find value of ∆H dissolution of given salts, for given two cases.

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

A:

Q: A piece of titanium metal with a mass of 24.8 g is heated in boiling water to 99.5 °C and then…

A: Given that: mass of titanium metal = 24.8 g mass of coffee-cup =75.0 g specific heat capacity of…

Q: The heat capacity of a calorimeter is calibrated by adding 3.00 mL of water at 40.0°C to the…

A: Heat is released by water at a higher temperature and absorbed by water at a lower temperature.…

Q: In a coffee cup calorimeter, a student adds 2.50 g of calcium, followed by addition of 50.0 mL of…

A: Let us take the initial temperature of all components are at room temperature, i.e., 250C (298 K)…

Q: When 129.0 g of 0.200 M NaCl(aq) at 22.0 °C is added to 212.0 g of 0.100 M AgNO3(aq) at 22.0 °C in a…

A: Answer is explained below.  Given that, mass of NaCl = 129.0 g and mass of AgNO3 = 212.0 g.  Due to…

Q: A 55.5g sample of brass, which has a specific heat capacity of 0.375·J·g−1°C−1, is put into a…

A:

Q: A hot 104.4 g lump of an unknown substance initially at Substance Specific heat (J/(g•°C)) 173.7 °C…

A: Given : Volume of water = 35.0 g Mass of metal = 104.4 g Initial temperature of water = 25.0 oC…

Q: A generic solid, X, has a molar mass of 61.6 g/mol. In a constant-pressure calorimeter, 18.3 g of X…

A: Heat absorbed/ released by a solution can be calculated by usingthe expression:Q = m.Cp.∆T where, m=…

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

A: The amount of heat lost or gained by a substance depends in the specific heat capacity of the…

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

A: Mass of ammonium bromide = 7.86 g  Mass of water = 118.0 g

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

A: We have find out the enthaply of dissolution of MgCl2.

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

A:

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

A: Since the temperature of the solution is increased, heat is released by the dissolution reaction of…

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

A: given , WCaBr2    = 1.72 g  M CaBr2 =   200g/mol nCaBr2   = 1.72g/200g/mol ) WH2O  =  107.30 g…

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

A:

Q: A hot 115.8115.8 g lump of an unknown substance initially at 181.3181.3 °C is placed in 35.0 mL of…

A:

Q: Ice at 0.0 °C is placed in a Styrofoam cup containing 381. g of a soft drink at 15.8 °C. The…

A: To determine the mass of ice that has melted, first of all, the energy that has been liberated by…

Q: A sample of 23.9g of ammonium nitrate, NH&NO3. was dissolved in 133.8 g of water in a coffee cup…

A: Given Mass of NH4NO3 =m = 23.9 gMass of water = Mw = 133.8 gInitialTemperature = T1 = 28.1°CFinal…

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

A:

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

A: The enthalpy of dissolution at constant pressure is the enthalpy change associated with dissolution…

Q: When 21.0 g of 0.200 M NaCl(aq) at 18.7 °C is added to 18.0 g of 0.100 M AgNO3(aq) at 18.7°C in a…

A: Interpretation - To determine the amount of heat produced ( in J) when 21.0 g of 0.200 M NaCl(aq) at…

Q: A 50.0 mL sample of 0.5 M AgNO3(aq) is mixed with a 50.0 mL sample of 0.5 M NaI(aq) in a…

A:

Q: A hot 111.6 g lump of an unknown substance initially at Substance Specific heat (J/(g.°C)) 150.0 °C…

A: By help of Following formula we can calculate the specific heat of the unknown Substance -   M1 C1…

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

A:

Q: A 1.00-g sample of hexane, C6H14, undergoes complete combustion with excess O2 in  a bomb…

A: Answer: Bomb calorimeter is a constant volume calorimeter, therefore enthalpy change calculated in…

Q: A hot 101.6 g lump of an unknown substance initially at Substance Specific heat (J/(g•°C)) 164.8°C…

A: We have to equate the heat lost by the metal to the heat gain by the water to determine the specific…

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: A hot lump of 47.547.5 g of iron at an initial temperature of 51.5 °C51.5 °C is placed in 50.0 mL…

A:

Q: hot lump of 25.4 g of aluminum at an initial temperature of 83.0 °C is placed in 50.0 mL H2O…

A: This concept is based on principle of calorimetry in this concept heat given by system and heat lose…

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

A:

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

A: Given the mass of water inside the calorimeter = 104.80 g  Given the mass of CaCl2(s) dissolved =…