Question

40) boda Areal gas most closely approaches ideal behavior at __. a) 1.0 atm and 273K 10 atm and 298K 10 atm and 273K 1.0 atm and 298K e) 0.5 atm and 273K 41) 5059 What is the mole fraction of methanol, CH3OH, in an ethanol solution, CH,OH, that is 4.25 m methanol? 0.126 0.145 0.164 0.196 e) 0.204 42) 5059 The molality of a solution is _. a) moles of solute per liter of solution moles of solute per mole of solvent moles of solute per liter of solvent d) moles of solute per kilogram of solvent moles of solute per kilogram of solution 43) 5 이비 If 0.100 mole of naphthalene is dissolved in 100. g of benzene, C6H6, the molality is __ 0.100 m b) 0.900 m 1.00 m d) 1.28 m 12.8 m 44) sode The amount of energy transferred due to force is called _ a) enthalpy work heat exothermic endothermic

Answer 1

Ans (4) Molality = No. of moles of solute Mass of solvent linkg) 0.1 mol - Im o.1 kg Ans (5) The energy transferred due to So, the answer is (6) force is called work