Which graph shows a negative acceleration ( position and time )

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

What is true for a substance that releases energy