Choose the statement(s) that is/are true of the molar heat capacity of a monatomic gas. (i) the molar heat capacity at constant pressure (cmp) is the same as the molar heat capacity at constant volume (cmv ). (ii) the molar heat capacity at constant volume is approximately 12.5\: j.\: mol^{-1}.k^{-1} 12.5 j . m o l − 1 . k − 1 (iii) the molar heat capacity at constant pressure is approximately 25.5\: j.\: mol^{-1}.k^{-1} 25.5 j . m o l − 1 . k − 1 (iv) c_{mv}\: -c_{mp}\: =\: 8.3\: j.\: mol^{-1}.k^{-1}

Lem 2 the data below are for the system ethyl propyl ether (1)-chloroform (2) at 0.5 bar. use the data to answer the following questions (all questions refer to p d 0: 5 bar). a) what are the boiling points of the pure components at 0.5 bar? b) a mixture with the overall composition z1 d 0: 1 is brought to 47.6ä±c, 0.5 bar. what is the phase? c) 100 mole of a mixture with z1 d 0: 1 (state a) is mixed with 22 mole of pure ethyl propyl ether vapor (state b). the mixing takes place at 47.6 ä±c, 0.5. bar. what is the phase of the resulting mixture (state c)? if the state is a v/l mixture report the number of moles and mole fractions in each phase. d) plot the txy graph and show states a, b and c. the graph must be done by computer and should be properly annotated. ethyl propyl ether (1) - chloroform (2) at 0.5 bar t ( ä±c) x1 y1 t ( ä±c) x1 y1 42.9 0.000 0.000 49.0 0.470 0.455 43.0 0.020 0.010 49.1 0.520 0.520 43.9 0.065 0.029 48.9 0.567 0.592 45.4 0.156 0.089 48.3 0.652 0.720 46.4 0.215 0.142 47.6 0.745 0.815 47.6 0.296 0.223 46.7 0.822 0.872 48.3 0.362 0.302 45.7 0.907 0.937 48.7 0.410 0.375 44.6 1.000

Scientists have developed an explanation of a phenomenon from several verified hypotheses. the explanation has been confirmed through numerous experimental tests.which option best describes this explanation? a. scientific lawb. research questionc. hypothesisd. scientific theory

How does the attraction between particles affect the ability of a solvent to dissolve in a substance