Calculate the number of moles in massa. 2.13g of chlorine gas... B. 39.5g kmno4​

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?

Can anyone plz answer any of these. even if its one it will

You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.