which has the greatest amount of energy a glass of water at 20 degrees or a glass of water at 80 degrees

80 degrees

Explanation:

if you think about it 80 degrees is hotter than 20 degrees if I'm not right tell me in the comments please

What is the concentration of H+ ions at a pH = 7?

⇒ 0.0000001 mol/L  

What is the concentration of OH– ions at a pH = 7?

⇒ 0.0000001 mol/L  

What is the ratio of H+ ions to OH– ions at a pH = 7?  

1 :1