A 20 g silver ingot was melted at normal atmospheric pressure. What amount of heat will be released during the crystallization
| August 25, 2020 | Education
A 20 g silver ingot was melted at normal atmospheric pressure. What amount of heat will be released during the crystallization of silver and with its further cooling to a temperature equal to 60 ° G? The specific heat of fusion of silver is 8.7 * 10 ^ 4J / kg.
Q = λm + cmt = t (λ + ct) = 0.02 * (87000 + 250 * 902) = 6250 J
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.