Question

In: Physics

A copper calorimeter can with mass 0.555kg contains 0.165kg of water and 1.90

A copper calorimeter can with mass 0.555kg contains 0.165kg of water and 1.90

Solutions

Expert Solution

GIven

  mass of copper calorimeter mcu = 0.555 kg

  specific heat of copper calorimeter ccu = 390 J / kg . K

   mass of water   m w = 0.165 kg

   specific heat of water cw = 4190 J / kg . K

mace of ice m i = 0.019 kg

latent heat of ice = 334*103 J / kg

mass of lead mpb = 0.755 kg

specific heat of lead cpb = 130 J / kg . K

Heat lost by the lead is

            Q = m pb c pb ( 255- T )

                =   0.755 * 130 J / kg . K *(255- T )

                 = 98.15 ( 255-T )

heat gained by calorimeter

            Q = ( mw + m ice) cw T + m cu ccu T +mice L f

                = ( 0.165+0.019)(4190) T + (0.555)(390 J / kg . k ) T + (0.019 kg )(334*103 )

heat loss by lead is equal to heat gained by calorie meter

          98.15 ( 255-T ) = 770.96 T + 216.45 T + 6346

              18682.25 = 1085.56 T

                  T = 17.21 o C --> Answer


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