One of the most worrisome waste products of a nuclear reactor is plutonium 239 (239Pu). This nucleus is radioactive and decays by splitting into a helium-4 nucleus and a uranium-235 nucleus (4He +... Q: One of the most worrisome waste products of a nuclear reactor is plutonium 239 (239Pu<span>).</span>
Answer: Electron
Explanation:
An orbital is a region in an atom where there is a high probability of finding an electron.
Atmospheric pressure at sea level is 760 mmHg.
We have been told that at the summit the pressure is only one third the pressure at sea level.
Then the pressure at the mountain top is

mmHg
Air is made of a mixture of gases. the pressure that each gas exerts individually contributes to the total pressure of the system. The pressure that each gas exerts is the partial pressure of that gas which depends on the mole fraction of that gas or percentage composition of the individual gas.
Partial pressure of Oxygen - total pressure x percentage composition
Therefore pO₂ -

= 53.2 mmHg
Answer is 53 mmHg
Answer:
The number of elements in a compound is counted by identifying and counting the chemical symbols represented in the chemical formula
A compound is a substance that is a mixture of more than one elements.
Compounds are made of two or more elements. These elements are represented by their symbols. These symbols can be identified and the number of elements represented by these symbols are counted.
For example, in the compound H_2OH
2
O :
H represents Hydrogen
O represents Oxygen
The elements in Water ( H_2OH
2
O ) are Hydrogen and Oxygen
Therefore, the number of elements in H_2OH
2
O is 2
Also in, NaClNaCl
The elements are Sodium(Na) and Chlorine(Cl)
There are two elements in NaCl
Hence, the number of elements in a compound is counted by identifying and counting the chemical symbols represented in the chemical formula
Learn more here: brainly.com/question/17571315
Answer:

Explanation:
Hello,
In this case, ammonia dissociation is:

So the equilibrium expression:
![Kb=\frac{[NH_4^+][OH^-]}{[NH_3]}](https://tex.z-dn.net/?f=Kb%3D%5Cfrac%7B%5BNH_4%5E%2B%5D%5BOH%5E-%5D%7D%7B%5BNH_3%5D%7D)
That in terms of the reaction extent and the initial concentration of ammonia is written as:

Thus, solving by using solver or quadratic equation we find:

Which actually equals the concentration of hydroxyl ion, therefore the pOH is computed:
![pOH=-log([OH^-])=-log(0.00133)=2.88](https://tex.z-dn.net/?f=pOH%3D-log%28%5BOH%5E-%5D%29%3D-log%280.00133%29%3D2.88)
And the pH from the pOH is:

Best regards.