Answer:
0.159 \%
Explanation:
The acid will dissociate according to the reaction shown below:-

Given that, pH=3.8
The concentration of can be determined from the expression fo pH as:-
pH = - log ![[H^+]](https://tex.z-dn.net/?f=%5BH%5E%2B%5D)
3.8 = - log ![[H^+]](https://tex.z-dn.net/?f=%5BH%5E%2B%5D)
= 
The initial concentration of RCOOH was 0.10 M, then the percent dissociation was- calculated as shown below:-

Answer:
Ability to be bent = Malleability
Identity = Physical Change
Electrical Current = Conductivity
Dissolve = Solubility
Color, Phase, or Hardness = Physical Property
Use a sieve to separate the water from the iron fillings and sand.
Use a magnet to separate the iron from the sand.