In this reaction, what is the ratio of Mercury to Oxygen? 2HgO + 2Hg + O2

What element breaks down into yttrium-90?

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?