How many times is the weight of the air that fills the room in winter (7 ° С) more than its weight in summer
| May 31, 2021 | education
How many times is the weight of the air that fills the room in winter (7 ° С) more than its weight in summer (37 ° С)? The pressure is the same.
Clapeyron’s equation for indoor air in winter and summer (pressure P, volume V, mass of one mole of air M are unchanged):
PV = mzRTz / M (T – temperature, R – gas constant, m – air mass);
PV = mlRTl / M.
The left-hand sides of the equalities are the same, so we can write the equality of the right-hand sides:
mzRTz / M = mlRTl / M;
mzTz = mlTl;
Tz = 273 + 7 ° C = 280 K;
T = 273 + 37 ° C = 310 K.
mz = mlT / Tz = (ml * 310 K) / 280 K = 1.107ml.
Answer: The mass of air in the room in winter is 1.107 times more than in summer.
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.
