what is the solutins to these problems? Lead pellets, each of mass 2.00g, are he
ID: 1670003 • Letter: W
Question
what is the solutins to these problems? Lead pellets, each of mass 2.00g, are heated to 200°C. How many pellets must be added to540 g of water that is initially at20.0°C to make the equilibrium temperature 25.0°C? Neglectany energy transfer to or from the container.pellets What mass of water at 25.0°C must be allowed to come tothermal equilibrium with a 1.00 kggold bar at 100°C in order to lower the temperature of the barto 50.0°C?
g what is the solutins to these problems? Lead pellets, each of mass 2.00g, are heated to 200°C. How many pellets must be added to540 g of water that is initially at20.0°C to make the equilibrium temperature 25.0°C? Neglectany energy transfer to or from the container.
pellets What mass of water at 25.0°C must be allowed to come tothermal equilibrium with a 1.00 kggold bar at 100°C in order to lower the temperature of the barto 50.0°C?
g
Explanation / Answer
pellets must be addedN*2g*0.127*(200-25)=540*4.18*(25-20) => N=254 (b)mass of water at 25.0°C must be allowed to come tothermal equilibrium with a 1.00 kggold bar at 100°C m*4.18*(50-25)=1000*0.129*(100-50) => m=61.7g
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