In order to solve this type of problem, we take a look at the subscript of each element involved in the compound. These values signifies the number of particles present of that element in that compound. The calculation is as follows:
2.4 moles P2O10 ( 2 moles P / 1 moles P2O10 ) = 4.8 moles P
<span>NH4NO2(s)---> N2(g) + 2H2O(l)</span>
Places where a standing wave remains fixed in place.
Answer:
The correct answer is: Ka= 5.0 x 10⁻⁶
Explanation:
The ionization of a weak monoprotic acid HA is given by the following equilibrium: HA ⇄ H⁺ + A⁻. At the beginning (t= 0) we have 0.200 M of HA. Then, a certain amount (x) is dissociated into H⁺ and A⁻, as is detailed in the following table:
HA ⇄ H⁺ + A⁻
t= 0 0.200 M 0 0
t -x x x
t= eq 0.200M -x x x
At equilibrium, we have the following ionization constant expression (Ka):
Ka= ![\frac{ [H^{+}] [A^{-} ]}{ [HA]}](https://tex.z-dn.net/?f=%5Cfrac%7B%20%5BH%5E%7B%2B%7D%5D%20%20%5BA%5E%7B-%7D%20%5D%7D%7B%20%5BHA%5D%7D)
Ka= 
Ka= 
From the definition of pH, we know that:
pH= - log [H⁺]
In this case, [H⁺]= x, so:
pH= -log x
3.0= -log x
⇒x = 10⁻³
We introduce the value of x (10⁻³) in the previous expression and then we can calculate the ionization constant Ka as follows:
Ka= 
= 
= 5.025 x 10⁻⁶= 5.0 x 10⁻⁶
Cell membrane
Explanation:
The cell membrane is the part of a cell that has similar functions to the skin.
The skin is a protective covering round the body. It also helps in maintaining a dynamic balance between the environment and the body.
Cell membrane is found in both plants and animals. It is made up of rich phospholipid layers that protects the internal component of the cell. It also allows for selective permeability.
learn more:
Eukaryotic cells brainly.com/question/4493579
Cell organelles brainly.com/question/1494707
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