5kg of r-134a at 300 kpa fills a rigid container whose volume is 44 l. (a) identify two independent intensive properties and thus show that the system state is well defined. what is the description of the state of the r-134a? (b) determine the temperature and total internal energy in the container. the container is now heated until the pressure is 600 kpa. (c) sketch a diagram of the process indicating the system and direction of all relevant energy flows. list all your assumptions. (d) fill in the blank: "the heating process occurs under iso conditions." (e) after heating, has the state description changed from the initial state? explain. (f) determine the temperature and total internal energy when the heating is completed.

2points what is the job of a scientist? a. to answer ethical questions. b. to write laws based on his or her knowledge. c. to ask and answer scientific questions. d. to ignore facts that do not support his or her theory.

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane