Answer:
12.78
Explanation:
pOH= -log(0.0600) = 1.22184875
pH= 14-1.22184875 = 12.78
Answer:
To ensure provide and reliable data
Explanation:
Calibration ensures precise repeatable performance while preventing pipetting errors. Just the way measurement standards are established to distinguish valid and invalid processes, pipette calibration standards are designed to ensure the best pipette accuracy.
Answer:
The air molecules are closer together in the upper stratosphere.
Explanation:
Answer
is: pH value of solution is 11.85.<span>
[</span>OH⁻] = 7.1·10⁻³ M; equilibrium concentration of hydroxide anions.
[OH⁻]·[H⁺]
= Kw.
0.0071 mol/L · [H⁺] =
10⁻¹⁴ mol²/L².
[H⁺] = 10⁻¹⁴ mol²/L² ÷ 7.1·10⁻³ mol/L.
[H⁺] = 1.4·10⁻¹² mol/L.
pH
= -log[H⁺].
pH
= -log(1.4·10⁻¹² mol/L).
pH
= 11.85.
If
pH is less than seven, solution is acidic; greater than seven, solution is
basic; equal seven, solution is neutral.
