Use coulomb's law to calculate the energy of a copper ion and an oxide ion at their equilibrium ion-pair separation distance.
cu^2+ radius(pm)= 77 o^-2 radius (pm)=140 answer in aj

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume

Pl what kind of reaction is this? nahco3 + h2o → co2 + naoh + h2o -composition -decomposition -single replacement -double replacement im leaning more toward single replacement. if im wrong can you explain whyy?