Not all units of measurement are equal, but the value of each unit is used for its intended purpose, so we have different units of measurement for each problem.
Answer:
c) more OH⁻ ions than H₃O⁺ ions
Explanation:
A substance with a PH of 9 implies that it has more OH⁻ ions than H₃O⁺ ions.
Such substances are said to be an alkaline or a base.
A base is a substance the produces excess hydroxyl ion in aqueous solutions.
An acid will produce excess hydroxonium ions in a solution.
So, the pH scale is used to indicate whether a substance is an acid or base or non of them.
Acids have pH of less than 7
Bases have pH of > 7
The mass numbers for two isotopes are unequal because they have different numbers of NEUTRONS.
Answer:
There are four laws of thermodynamics that define fundamental physical quantities (temperature, energy, and entropy) and that characterize thermodynamic systems at thermal equilibrium.
Explanation:
Answer:
TIMELINESS, RELEVANCE, AUTHORITY, ACCURACY and PURPOSE.
Explanation:
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