Answer:12.5
Explanation: Divide 50$ by the 4 hours and you will get 12.5 which is $12.50.
Answer: I think that the answer was False.
<u>Answer:</u> The chemical symbol of the compound formed is
or 
<u>Explanation:</u>
An ionic compound is formed when the complete transfer of electrons takes place from one element (usually metals) to another element (usually non-metals).
The element losing electron (metal) forms a positive ion known as a cation while the element gaining electron (non-metal) forms a negative ion known as an anion.
Element X has the atomic number 11 which is sodium. The electronic configuration of it is 
This element will lose 1 electron to form
ion of 
Chlorine has the atomic number 17. The electronic configuration of it is 
This element will gain 1 electron to form
ion
When these two ions combine, they lead to the formation of an ionic compound having a chemical formula of
or 
Hence, the chemical symbol of the compound formed is
or 
Answer:
Kelvin
Explanation:
As we know that

Where P is the pressure in atmospheric pressure
T is the temperature in Kelvin
R is the gas constant
V is the volume in liters

Substituting the given values in above equation, we get -

On rearranging, we get

Kelvin