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the answer is A. Atoms of the same element can have different number of neutrons
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Through stored energy is how light travels
Answer:
°C = °K - 273.
Explanation:
the 1st and 2d rows belong to F°; the last one is wrong; correct answer is °C=°K-273 only.
For example, 0°C=273°K; 10°C=283°K; 100°C=373°K.
A buffer solution contains an equivalent amount of acid and base. The pH of the solution with an acid dissociation constant (pKa) value of 3.75 is 3.82.
<h3>What is pH?</h3>
The amount of hydrogen or the proton ion in the solution is expressed by the pH. It is given by the sum of pKa and the log of the concentration of acid and bases.
Given,
Concentration of salt [HCOO⁻] = 0.24 M
Concentration of acid [HCOOH] = 0.20 M
The acid dissociation constant (pKa) = 3.75
pH is calculated from the Hendersons equation as,
pH = pKa + log [salt] ÷ [acid]
pH = 3.75 + log [0.24] ÷ [0.20]
= 3.75 + log (1.2)
= 3.75 + 0.079
= 3.82
Therefore, 3.82 is the pH of the buffer.
Learn more about pH here:
brainly.com/question/27181245
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0.598 m
598 mm × (1 m/1000 mm) = 0.598 m
