Une solution dont le pH=12 contient 6*10 exposant 11 ions h+ par litre sachant que le pH diminue d une unité quand le nombre d ions h+ est multiplie par 10
trouver la valeur du ph d une solution contenent 6*10 exposant 16ions h+ par litre

Which articulations allow for greatest range of motion?

** urgent** the voltage across the primary winding is 350,000 v, and the voltage across the secondary winding is 17,500 v. if the secondary winding has 600 coils, how many coils are in the primary winding? a- 30 coilsb- 583 coilsc- 12,000 coilsd- 332,500 coils

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?