A. Sodium: 11 Chlorine: 17
B.Sodium: 11 <span>Chlorine: 17</span>
Answer: a. atominc number= protons= 33
neutrons= mass- atominc number
80-33= 47 neutrons
b.35 protons
46 neutrons
hope this helps
NOTE: Above question is incomplete:
Complete question is attached as an attached (image),along with the answer.
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Vapor pressure is defined as <span> the </span>pressure<span> exerted by a </span>vapor<span> which is in equilibrium with liquid, at a given temperature, in a closed system. If vapor pressure is high, it suggest that escaping tendency of liquid is high. This will result in higher pressure level in manometer.
In present case liquid A (i.e option F) has highest level in manometer, suggesting that it has highest vapor pressure.
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Answer: is a single replacement reaction.
Explanation:
A chemical reaction in which one element of a compound is replaced by another element is called single replacement reaction.
For example,
Here, fluorine element in the compound is replaced by the element bromine.
Therefore, it is a single replacement reaction.
Thus, we can conclude that is a single replacement reaction.