A body of what mass can be heated by 30 degrees, spending 24 kJ. The body is made of zinc.
| September 5, 2021 | education
Initial data: Δt (zinc temperature change) = 30 ºС, Q (heat energy expended for zinc temperature change) = 24 kJ = 24 000 J.
Constants: C (specific heat of zinc) = 400 J / (kg * K).
Formula for calculating the mass of zinc:
Q = C * m * Δt and m = Q / (C * Δt).
Let’s perform the calculation:
m = 24000 / (400 * 30) = 24000/12000 = 2 kg.
Answer: By spending 24 kJ of thermal energy, you can heat a zinc body weighing 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.
