What is the mass of ice taken at a temperature of -10 ° C, if an amount of heat of 4200 J
| July 23, 2021 | education
What is the mass of ice taken at a temperature of -10 ° C, if an amount of heat of 4200 J was spent on heating it to the melting point?
To calculate the value of the mass of heated ice, we will use the formula: Q = Cl * m * (t0 – tmelt), whence we express: m = Q / (Cl * (tmelt – t0)).
Variables and constants: Q – consumed amount of heat (Q = 4200 J); Cl – specific heat (Cl = 2100 J / (kg * K)); tmelt – melting point (tmelt = 0 ºС); t0 – temperature of a piece of ice before heating (t0 = -10 ºС).
Calculation: m = Q / (Cl * (tmelt – t0)) = 4200 / (2100 * (0 – (-10))) = 0.2 kg.
Answer: Heated ice has a mass of 0.2 kg.
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.
