Answer:
all of the above. they all are chemical reactions
Answer:
On the periodic table, each column is called a group. So, the answer is D. groups.
Explanation:
A) is incorrect because the rows on the periodic table are called periods.
B) is incorrect because the elements are what is organized on the periodic table.
C) is incorrect because the periods are the rows on the periodic table.
D) is the correct answer because the columns on the periodic table are called groups.
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Answer:
The 18th-century German physicist Daniel Gabriel Fahrenheit originally took as the zero of his scale the temperature of an equal ice-salt mixture
Explanation:
Control: skunk
Independent: poking (the skunk)
dependent: emission of toxic fumes
PKa is defined as the logarithm of the inverse of Ka, i.e
pKa = log ( 1 / Ka)
Ka is the dissociation constant of the acid. The larger Ka the stronger the acid.
On the other hand, from pKa = log (1 / Ka) the larger Ka the smaller 1 /Ka, and so the smaller log (1/Ka).
So, the relation between Ka and pKa is inverse, which means that an acid with greater value of pKa will have lower value Ka, and so it will be weaker or the smaller the pKa the stronger the acid.
Therefore, in our case HA has the lower pKa ant it will be the stronger acid.
Answer: HA is the stronger acid, because it has the lower pKa and pKa is inversely related to the strength of the acid.
