One of the many statements of the second law of thermodynamics is: heat cannot flow from a colder body to a warmer one without external aid. assume two systems, 1 and 2, at t1 and t2 (t2 > t 1). show that if a quantity of heat q did flow spontaneously from 1 to 2, the process would result in a decrease in entropy of the universe. (you may assume that the heat flows very slowly so that the process can be regarded as reversible. assume also that the loss of heat by system 1 and the gain of heat by system 2 do not affect t1 and t2.)

What postulate of the kinetic molecular theory best explains why gases have high fluidity? because collisions between gas particles are elastic, there is no loss of energy as particles flow past each other. because gases consist of large numbers of tiny particles, they spread out and do not come in contact with each other. because the attractive forces between gas particles are negligible, gas particles can glide easily past one another. because the average kinetic energy of gas particles increases as temperature increases, gas particles behave more like a liquid. question 6 compare the compressibility of gases and liquids. support your answer by describing the arrangement of particles in gases and liquids.

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Nan element’s square on the periodic table, the number with the greatest numerical value represents the