A27.6 mL sample of (used in the manufacture of flame-retardant chemicals) is obtained at STP. (a) What is the mass of this gas, in milligrams? (b) How many molecules of are present?
12.3 Each substance has a standard molar entropy which tells how dispersed the energy is in one mole of the substance at 1 bar of pressure and 25ºCconditions at which it remains in its standard state. This is influenced by the molecules’ molar masses (the greater mass, the more entropy), the amount of organization of the structure if a solid (which impacts how rigid the substance is; think about a bunch of things held together tightly, they cannot move as much as if they were loosely connected, therefore the more rigid the less microstates, less entropy), and the ways all the molecules interact with each other within the substance. These interactions depend on rotational motion, or how they bump into each other, which
