Which of the following reactions in a redox reaction? a
2 Mg(s) + O2(g) → 2 MgO(aq)

b
HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq)

c
Pb(NO3)2(aq) + KCl(aq) → PbCl2(aq) + KNO3(aq)

d
CaCO3(s) → CaO(s) + CO2(g)

Draw the more stable lewis dot structure for bro2-

In the reading, yao chen-yuan describes traveling to deliver a message. why was he willing to risk danger to travelto tientsin? he wanted to the boxers with their cause

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)