There is 200 g of naphthalene at 20 degrees Celsius. How much heat should be spent to bring to the melting point
| November 28, 2020 | education
There is 200 g of naphthalene at 20 degrees Celsius. How much heat should be spent to bring to the melting point and melt the naphthalene?
decision
Q1 = cm (t2-t1)
Q2 = l (lambda) m
Q = Q1 + Q2
Q1 = 1300J * 0.2kg (80.26-20) = 15668J
Q2 = 151000J * 0.2kg = 30200J
Q = 30200J + 15668J = 45868J
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