13. What is Delta G for the reaction N2(g) +O26) -- 2NO where Delta S = 0.02442 kJ/K at 303.0 K and AH = 180.7 kJ. Use Delta G = Delta H - TDelta S.
A. 173.3 kJ
B. 7.399 kJ
C.-173.3 kJ
D. 258.87 kJ

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

How does a sample of helium at 15 degree celsius compare to a sample of helium at 215 k? a) the helium at 15 degrees celsius has a higher average kinetic energy that the sample at 215 k. b) the helium at 15 degrees celsius has lower nuclear energy that the sample at 215 k. c) the helium at 15 degrees celsius has slower- moving atoms that the sample at 215 k. d) the helium at 15 degrees celsius has smaller atoms than the sample at 215 k.

Which of these describes how heat is transferred by convection* a. sunlight travels through space without the aid of fluids or solids. b. warm air rises and takes the heat with it, eventually, it cools and sinks c. air at the equator rises and sinks at the poles. d. air molecules touch the warm ground, heating them up *not conduction