In an experiment to measure the specific heat of material, a student first measured the masses of the following samples as given in Table 1. Table 1: Measurement of Mass Physical quantity measured in (g) Mass of Styrofoam cup Mass of Styrofoam cup + water Mass of Aluminium sample Mass of Copper sample Value 60.5 18.7 62.7 and then recorded the temperatures of the above two samples, in Table 2. Table 2: Measured values of Temperatures Hot Equilibrium Cold Sample temperature (°C) temperature ("C) temperature (°C) Aluminium 99.6 28 25.5 Copper 99.6 34 28 Answer the following questions using the data given in Table 1 and Table 2. (Please enter the answers with two digits after decimal)

Can some show me how to calculate the specific heat with the given information?

A 45.90 g sample of pure copper is heated in a test tube to 99.40°C. The copper sample is then transferred to a calorimeter containing 61.04 g of deionized water. The water temperature in the calorimeter rises from 24.39°C to 29.10°C. The specific heat capacity of copper metal and water are J and 4.184 J 0.387 respectively. g. °C g. °C Assuming that heat was transferred from the copper to the water and the calorimeter, determine the heat capacity of the calorimeter. Heat capacity of calorimeter-

59.8 J was required to raise the temperature of 25.0 g of ethylene glycol by 1.00 K. Calculate the specific heat capacity of ethylene glycol. O a. 2.39 J/g.K O b. None of the above O c. 2.03 J/g.K O d. 1.39 J/g.K Next page Documents Jump to...

SUBJECT : GENERAL CHEMISTRY 2 TOPIC : HEAT AND CALORIMETRY

Q: A sample of gas expands from 40.0 L to 42.0 L at a constant pressure of 1 bar and receives 48 J of heat. Calculate ?U (in J) for the gas during this process. Answer in correct sig digs

When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer Cardboard or In the laboratory a general chemistry student finds that when 0.46 g of MgCl,(s) are Styrofoam lid dissolved in 102.20 g of water, the temperature of the solution increases from 24.17 to 26.04 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.67 J/°C. Nested Styrofoam cups Based on the student's observation, calculate the enthalpy of dissolution of MgCl2(s) in kJ/mol. Reaction occurs in Assume the specific heat of the solution is equal to the specific heat of water. solution. AHdissolution kJ/mol chookc Cngage Lng

Mass of aluminum can  38.57 Mass of aluminum can and water 138.68 Mass of water 99.15 Initial mass of paraffin wax candle (before the experiment) 10.56 Final mass of paraffin wax candle (after the experiment) 10.45 Mass of paraffin wax consumed 0.16 Initial temperature of water and aluminum can calorimeter 23.3 Final temperature of water and aluminum can calorimeter 29.5 Change in temperature 0.4 Calculate the molar enthalpy of combustion for paraffin wax.

The “Miracle Thaw” is a device that defrosts frozen foods more quickly than when left out to the atmosphere. It is made of an aluminum alloy which has a (relatively) large specific heat. Explain why the engineers chose an alloy with a large specific heat for this task.