Answer:
The pH of an aqueous solution is the measure of how acidic or basic it is. The pH of an aqueous solution can be determined and calculated by using the concentration of hydronium ion concentration in the solution.
Explanation:
It is the first one because haven't you ever noticed when you hold a mirror a certain way the light can reflect a light up another surface? so, therefore, the answer that makes the most sense would be the first. :)
the equation is CH4 + O2 --> H20 + CO2.
im pretty sure it absorbs the heat.
The answer would be Br-79 because it is 50.69% abundant.
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