I believe it would be the 2nd one, “increasing the area of their contact”.
Answer:
1.608 g/cm3
Explanation:
Formula:
D=m/v
d= density
m= mass
v= volume
Given data:
Mass= 19.3 g
Volume= 12 cm3
The volume of water displaces by object is 12 cm³ which means that object hold the volume of 12 cm³
Now we will put the values in formula:
D=19.3 g/ 12 cm3= 1.608 g/cm3
so the density of object is 1.608 g/cm3
The strength of an acid increases if the stability of conjugate base increases
The stability of a conjugate base increases with the presence of electron with drawing group (electronegative group)
Thus more the electronegativity of an atom attached to a carboxylic acid higher the strength of acid
In these examples CH3CH2CH2CF2CH2COOH contains to electronegative flourine atoms which stabilizes the conjugate base hence this will be the strongest acid among the given acids
