Under which conditions does the molar volume of a gas decrease? a. at 273 k and at 2.0 atm. b. at 273 k and at 0.5 atm. c. at 409.5 k and at 1.0 atm. d. at 546 k and at 2.0 atm

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem