Answer:
Noble gases
Explanation:
Noble gases are nonreactive, nonmetallic elements in group 18 of the periodic table. As you can see in the periodic table in the figure below, noble gases include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).18 Jun 2021
Answer:
1.59 atm
Explanation:
The reaction is:

The dalton's law tell us that the total pressure of a mixture of gases is the sum of the partial pressure of every gas.
So after the reaction the total pressure is:

we don't include
because it decomposed completely.
Assuming ideal gases
PV=nRT
P= pressure, V= volume of the container, n= mol of gas, R=constant of gases and T=temperature.
so moles of
is:

from the reaction stoichiometry (1:1) we have that after the reaction the number of moles of each product is the same number of moles of
.


The partial pressure of each gas is:


so total pressure is:

replacing the moles we get:

We know that T2=3*T1
replacing this value in the equation we get:

