Which of these elements has an electron configuration of [Kr]5s?? O barium
• calcium
• rubidium
O strontium

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)

Can someone me with questions 15 to 17 plz.

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution