Answer: Option (E) is the correct answer.
Explanation:
A spontaneous reaction is defined as the process which tends to occur on its own. And, a non-spontaneous reaction is defined as a process for the completion of which we have to provide certain conditions.
For example, ice melting at 
is spontaneous primarily due to the increase in molecular disorder (dispersal of matter). Also, melting of ice is taking place on its own without any external force.
It is not necessary that all exothermic reactions will be exothermic in nature.
Thus, we can conclude that the statement all exothermic reactions are spontaneous, is false.
Answer:
C
Explanation:
Metals are good conductors of heat
Answer:
The first option: Strontium Fluorate.
Explanation:
because Fluorine and oxygen combines to make fluorate, Strontium stays the same.
p.s: i need help in geo and there's an exam tomorrow.
The molecularity of the elementary step X + X + Y → Z is 3.
<h3>What is Molecularity ?</h3>
Molecularity in chemistry is defined as the total number of molecules that react in an elementary reaction .
In the given question the elementary reaction given is
X + X + Y → Z?
or 2X +Y --> Z
X molecule is 2 and Y molecule is 1 so the molecularity is 2+1 = 3
The molecularity of the elementary step X + X + Y → Z is 3.
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