PH is the potential of hydrogen. pH = -log₁₀(H+) while, pOH = -log₁₀(OH-) But; pH + pOH =14 Therefore; for a solution with a concentration of (OH-) of 10^-10 The pOH= -log(10^-10) = 10 Therefore pH =14-10 = 4
When you freeze the already cracked glow stick the chemical reactions are slowed down. When you take it out of the freezer and it reaches room temperature the chemical reaction will go on as 'normal'. XD hope this helps
I believe it would be A, frogs and spiders, because frogs and spiders both eat grasshoppers. But I cannot see the diagram it talks about, so it's harder to tell.
