In which case will more energy be released: when 3 kg of aluminum or 6 kg of copper are solidified, if they are in a liquid
| November 27, 2020 | education
In which case will more energy be released: when 3 kg of aluminum or 6 kg of copper are solidified, if they are in a liquid state at their melting temperatures?
1. Energy during solidification of 3 kg of aluminum: Q = λ * m (λ-tabular value, m-kg) Q = 3.9 * 10 ^ 5 * 3 = 11.7 * 10 ^ 5 J
2.Energy during solidification of 6 kg of copper: Q = λ * m (λ-tabular value, m-kg) Q = 2.1 * 10 ^ 5 * 6 = 12.6 * 10 ^ 5 J
3.Comparison 11.7 * 10 ^ 5 J <12.6 * 10 ^ 5 J
Answer: More energy will be released when 6 kg of copper solidifies.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
