Compound - made out of two or more types of elements chemically combined
Mixture - two or more substances in which the substances retain their identity
Element - simplest form of matter that is present by itself
Hydrogen
Hydrogen is identified by the glowing splint described in the question.
Explanation:
As it is known that
molecule is a non-linear molecule. Therefore, its isochoric heat capacity will be as follows.

= 
= 18 R
Also, 
where,
= molar heat capacity
M = molecular mass
= specific heat
Hence, calculate the value of
as follows.



This means that value of isochoric specific heat is
.
Yes, we have to assume ideal gas behavior because for ideal gas:
dU = 
Whereas for real gases "
" has to be added here.
Answer:
A ) MOVIMIENTO
Explanation:
PLEASE MARK ME AS BRAINLIEST
<h2>
Hello!</h2>
The answer is:
When the pressure that a gas exerts on a sealed container changes from
22.5 psi to 19.86 psi, the temperature changes from 110°C to
65.9°C.
<h2>
Why?</h2>
To calculate which is the last pressure, we need to use Gay-Lussac's law.
The Gay-Lussac's Law states that when the volume is kept constant, the temperature (absolute temperature) and the pressure are proportional.
The Gay-Lussac's equation states that:

We are given the following information:
We need to remember that since the temperatures are given in Celsius degrees, we need to convert it to Kelvin (absolute temperature) before use the equation, so:

Now, calculating we have:

Hence, the final pressure is equal to 19.86 Psi.
Have a nice day!