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The complete question probably is
The pH scale for acidity is defined by pH = − log₁₀[H⁺] where [H⁺] is the concentration of hydrogen ions measured in moles per liter (M). A solution has a pH of 2.55. Find the hydrogen ion concentration.
Answer: -
0.003 M
Explanation: -
pH = − log₁₀[H⁺]
Thus the hydrogen ion concentration [H⁺] = 
= 
= 0.003 M
Answer:
84%
Explanation:
2100 j out / 2500 j in = .84 = 84%
A toothbrush that has toothpaste in the middle so it comes preloaded. That way it is cleaner and uses more product than normal
Answer:
Basic
Explanation:
The pH scale is measured from 0 to 14.
At the pH scale of 7, a solution is neutral.
Any solution above 7 is basic.
Any solution below 7 is acidic.
Because you have been given the hydronium concentration [H₃O⁺], you can find the pH of the solution using the following formula:
pH = -log[H₃O⁺]
pH = -log(6.0 x 10⁻¹²)
pH = 11.22
As you can see, the solution must be basic because the pH lies within the basic range.
Answer: B!
Explanation: In the direction opposite of the direction of the applied force.There is no force in the other side being applied.
