sapling In this virtual lab, you will use coffee cup calorimetry to determine th

Question

sapling 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 metal 30- 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 Tmetal = 11 90.0 Tmetal 90.0 Hot Plate Reset Begin esetBegin In another step of this lab, you record the mass of water (mwater) in a coffee cup as 30- 'water= 130.00 g What is the initial temperature of the water, Twatert in the coffee cup as shown to the left? Previous Give Up & View Solution (O Check Answer 0 Next Exit Hint

Explanation / Answer

Q = mcdT

m = mass

c = specific heat

Heat lost by metal = Heat gained by water

Hence,

mc (t1-t) = mc (t-t2)

45 g x cmetal x ( 90-26) = 130 g x 4.184 x (26-22)

cmetal = 0.75 J/ (g. oC)

Therefore,

specific heat of the metal =  0.75 J/ (g. oC)

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