Answer:
Gold
Explanation:
We are given that
Mass of sample ,m=385 g
Volume ,V=20mL
We have to find the coin is gold or yellow brass.
We know that
Density=
Using the formula
Density of coin=19.3g/mL
Density of gold=19.3g/mL
Hence, the coin is gold.
Consider a sample that is a mixture composed of biphenyl, benzoic acid, and benzyl alcohol. The sample is spotted on a TLC plate
1 answer:
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Answer:
emf generated by cell is 2.32 V
Explanation:
Oxidation:
Reduction:
---------------------------------------------------------------------------------
Overall:
Nernst equation for this cell reaction at -
where n is number of electrons exchanged during cell reaction, is standard cell emf ,
is cell emf ,
is concentration of
and
is concentration of
Plug in all the given values in the above equation -
So,