Explanation:
Sodium has atomic number of 11 and its electronic configuration is given by:
![[Na]=1s^22s^22p^63s^1](https://tex.z-dn.net/?f=%5BNa%5D%3D1s%5E22s%5E22p%5E63s%5E1)
The nearest stable electronic configuration to sodium is of the neon. So, in order to attain stability of noble gas it will loose its single electron.

![[Na^+]=1s^22s^22p^63s^0](https://tex.z-dn.net/?f=%5BNa%5E%2B%5D%3D1s%5E22s%5E22p%5E63s%5E0)
Sodium has single valency that is 1.
Let nbe the valency of the ion 'X'
By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

So, the formulas for all the possible compounds that sodium can form with the other ions will be:

Answer: There are 0.024 moles of gas are present in the container.
Explanation:
Given: Temperature =
= (25 + 273) K = 298 K
Pressure = 1.7 atm
Volume = 345 mL (1 mL = 0.001 L) = 0.345 L
Formula used is as follows.
PV = nRT
where,
P = pressure
V = volume
n = no. of moles
R = gas constant = 0.0821 L atm/mol K
T= temperature
Substitute the values into above formula as follows.

Thus, we can conclude that there are 0.024 moles of gas are present in the container.
Answer:
Hello your question is incomplete attached below is the complete question
answer : 6,7-dimethyl-3-nonanone ( B )
Explanation:
The product for the following reaction sequence as attached below is
6,7-dimethyl-3-nonanone
The following reaction sequence can be categorized under Carbon Nucleophiles.
Carbon Nucleophiles which can be used to convert aldehydes and ketones into carboxylic acids or alkenes.
Explanation:
1/ Fast-moving lava can kill citizens nearby the active volcanoes. (They can also die from famine, fires and earthquakes which can caused by volcanoes)
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5/ When volcanoes erupt, they emit a mixture of gases and particles into the air which can cause global warming by adding to the greenhouse effect (such as CO2) or a significant dip in global temperatures in the following year or two (ash and Sulfur dioxide).
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