In this virtual lab, you will use coffee cup calorimetry to determine the specif

Question

In this virtual lab, you will use coffee cup calorimetry to determine the specific heat, c, of a metal Heating the metal Imagine that, in lab, you record the mass of a piece of metal, mmetal, as 30 actal 45.00 g In the next step of the lab (as shown in the animation to the left) you heat up the piece of metal. Play the animation, and record the metal's highest temperature, Tmetal Number Hat Plate Tools Reset Begin x 102 In another step of this lab, you record the mass of water (mwaster) in a coffee cup as 0 Calorimetry experiment ater -130.00 g What is the initial temperature of the water, Tert in the coffee cup as shown to the left? Previous Give Up & View Solution ) Check Answer Next Exit- Hint

Explanation / Answer

Specific heat of metal

Heat lost by hot metal = heat gained by cold water

mass of H2O = 130 g

Cp of water = 4.184 J/g.oC

dT for water = 29 - 26 = 3 oC

So,

heat gained by cold water = mCpdT

                                          = 130 x 4.184 x 3 = 1631.76 J

Heat lost by metal = 1631.76 J

mass of metal = 45 g

Cp = specific heat of metal

dT for metal = 85 - 29 = 56 oC

So,

specific heat of metal (Cp) = 1631.76/45 x 56 = 0.647 J/g.oC

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