At a depth of 40 m, the water pressure is 500 kpa. a diver breathing air (78% n2, 21% o2) at this depth would have what partial pressure of oxygen in his lungs?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Under which circumstances are kp and kc equal for the reaction aa(g)+bb(g)⇌cc(g)+dd(g)?

The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be: