A typical recreational scuba diver might fill his or her breathing tank with a mixture of nitrogen (P =136 atm) and oxygen (P = 64 atm). Below is an equilibrium that exists between oxygen and nitrogen gases at 298 K:
N2(g) + O2(g) + 2NO(g); K = 4.1x 10-31.Nitrogen monoxide is a pretty nasty gas that will burn the lungs when inhaled in high enough concentrations. Should the diver be concerned about the toxic gas?

If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+

Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices