It took 180,000 energy to evaporate the alcohol at the boiling point. What is the mass of the evaporated alcohol?
| February 26, 2021 | education
It took 180,000 energy to evaporate the alcohol at the boiling point. What is the mass of the evaporated alcohol? The specific heat of vaporization of alcohol is 0.9 MJ / kg.
Problem data: Q (energy required to evaporate alcohol) = 180,000 J.
Constants: according to the condition L (specific heat of vaporization of alcohol) = 0.9 MJ / kg = 0.9 * 10 ^ 6 J / kg.
To determine the mass of the evaporated alcohol, we use the formula: Q = L * m, whence m = Q / L.
Let’s make the calculation: m = 180,000 / (0.9 * 10 ^ 6) = 0.2 kg or 200 g.
Answer: The mass of the evaporated alcohol is 200 grams.
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.
