How many seconds elapsed in 2.0 hours

Modern weaponry has increased the number of deaths in wars and violent conflicts.

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?