Helium is stable compound. exists in gaseous state. the answer is gas
Answer:
The car is carrying a volume of air that is moving at 80 mph relative to the ground. But inside the car itself, the air not moving very much. If you take the windshield out and drive a 80 mph you will smash the fly onto the back window.
Explanation:
.
Answer:
13
Explanation:
It shows the answer in the text.
Answer:
pH= 11.5
Explanation:
To the calculation of the <u>pH value</u>, we need to write the ionization equation first. Then using the <u>ICE table</u> and the information given by the problem we can set up the problem:

I 1.1 M Zero Zero
C -X +X +X
E 1.1-X X X
As next step, using the <u>equilibrium expression</u> for Kb we can replace the terms find in the ICE table and then <u>solve for X</u>, so:
![Kb=\frac{[C_4H_4N_2O_3NH_3^+][OH^-]}{[C_4H_4N_3O_3NH_2]}](https://tex.z-dn.net/?f=Kb%3D%5Cfrac%7B%5BC_4H_4N_2O_3NH_3%5E%2B%5D%5BOH%5E-%5D%7D%7B%5BC_4H_4N_3O_3NH_2%5D%7D)
![9.2x10^-^6=\frac{[X][X]}{[1.1-X]}](https://tex.z-dn.net/?f=9.2x10%5E-%5E6%3D%5Cfrac%7B%5BX%5D%5BX%5D%7D%7B%5B1.1-X%5D%7D)

![(9.2x10^-^6)*[1.1-X]=X^2](https://tex.z-dn.net/?f=%289.2x10%5E-%5E6%29%2A%5B1.1-X%5D%3DX%5E2)


With the value of X we can find the <u>pOH</u> (lets remember that X<u> is the concentration of OH-</u>), so:


Finally, we can find the <u>pH value</u> with the equation:




<u>The 1.1 M allantoin solution have a pH value of 11.5</u>
Answer:
1125mL
Explanation:
this can be done using general gas law