The process as described is incomplete. What would fix the process so that it is accurate?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Which other elements contain the same number of outer electrons as sodium

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)