When a pot of water sits on a hot stove, the metal pot is
heated, and then transfers its heat to the water. A student claims that
conduction is the only type of heat
transfer occurring. The statement that explains why the student’s idea is
incorrect Conduction cannot occur between two different phases of matter. The answer
is letter A.
B.) Index of refraction of the second medium is higher
Answer:
They're too small
Explanation:
Atoms are smaller than the wavelength of visible light
The two ions to be distinguished are : Chloride ion and sulphate ion
The chloride ion can be identified by addition of silver nitrate to the solution containing chloride ion
On addition of silver nitrate, chloride ion will react with silver ions to form a white precipitate of silver chloride
The reaction is
Ag+ (a) + Cl-(aq) ---> AgCl(s)
the solution containing sulphate ion can be identified by adding barium chloride
Ba+2 + SO4^-2 ----> BaSO4(s), white ppt
thus barium chloride reacts with sulphate ion to form white ppt
