What is a major difference between a chemical reaction and a nuclear reaction? A) Only chemical reactions release light. B) Only
2 answers:
Answer: Option (C) is the correct answer.
Explanation:
A nuclear reaction is a reaction which brings change in the nucleus of an atom.
For example,
A chemical reaction is a reaction which results in the formation of new compounds which have different properties than their reactants.
Hence, in a nuclear reaction changes in an atom occurs whereas in a chemical reaction changes in a compound or molecule occurs.
Thus, we can conclude that a major difference between a chemical reaction and a nuclear reaction is that only nuclear reactions can change the identity of the atom.
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Answer:
168°C is the melting point of your impure sample.
Explanation:
Melting point of pure camphor= T =179°C
Melting point of sample = = ?
Depression in freezing point =
Depression in freezing point is also given by formula:
= The freezing point depression constant
m = molality of the sample = 0.275 mol/kg
i = van't Hoff factor
We have: = 40°C kg/mol
i = 1 ( non electrolyte)
168°C is the melting point of your impure sample.