The volume of a gas is 0.275L at 22.0°C and 0.974 atm. What will the volume be at 15.0°C and 0.993 atm?

Compounds a and b react to form compounds c and d according to the equation: aa + bb → cc + dd. under which conditions will the rate law be given by the equation: rate = k[a]a[b]b? a. the reaction takes place in one step. b. the reaction is endothermic. c. the reaction is exothermic. d. the reaction involves more than one step.