generally melting point of mixture is always different from melting point of pure compound
lets say you have a two compounds called A and B
and you have a unknown compound called X which can be either A or B
now your target is to find unknown is really A or B right?
take some amount of X and mix it with A and B separately
out of these two mixtures one will be pure compound (because we initially assume that unknown can be either A or B)
suppose X + A is same melting with A then X is A
X +B will be less than the melting point of A or
suppose X+B is same melting point like B then X is B
X+A will be less than melting point of B
The answer would be B, flapping ability.
Answer: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Explanation:
Diamond. It can only be cut with another diamond.
Answer:
Since with LiBr no precipitation takes place. So, Ag+ is absent
When we add Li2SO4 to it, precipitation takes place.
Ca2+(aq) + SO42-(aq) ----> CaSO4(s) ...Precipitate
Thus, Ca2+ is present.
When Li3PO4 is added, again precipitation takes place.Reaction is:
Co2+(aq) + PO43-(aq)---->Co3(PO4)2(s) ... Precipitate
A. Ca2+ and Co2+ are present in solution
B. Ca2+(aq) + SO42-(aq) ----> CaSO4(s)
C. 3Co2+(aq) + 2PO43-(aq)---->Co3(PO4)2(s)
