Explanation:
Metallic conductors contain free electron for conduction of electricity and is a good conductor of heat and electricity
electrolytic conductors contain ions for conduction
The answer fam is......... False
The Question is incomplete here is the complete question " Suppose an iron atom in the oxidation state +3 formed a complex with three hydroxide anions and three water molecules. Write the chemical formula of this complex.
Answer:
{Fe(OH)3(H20)3}
Explanation:
Oxidation state is the electron gained or lost by and atom, So if iron is in +3 state in formula it must have lost three electron.
We know that OH posses the oxidation state of -1 and water have zero oxidation state. SO, Let's take iron equal to y and find its oxidation state in the formula
y + 3 ( - 1 ) + 3 ( 0 ) = 0
y - 3 + 0 = 0
y-3=0
y= + 3
Hence it's proved that iron has +3 oxygen state.
Answer:
D
Explanation:
A. Is wrong
Salt water is not an element. In fact it contains sodium and chlorine asides the elements of the water
B is wrong
It is a mixture but it is not heterogeneous. It is not heterogeneous in the sense that when you take a sample of salt, the composition is throughout the same I.e containing salt and water
C is incorrect
It is a mixture of salt and water. They are both compounds and hence they both exist together as a mixture
D is correct
It is correct because, a sample of salt water irrespective of the amount taken for observation would contain salt and water
Which ancient Greek philosopher was the focus of study for the Italian humanists?
ANS : Aristotle
