The most appropriate answer is C !!
Explanation:
The relation between
is given by :
![K_w=K_a\times K_b](https://tex.z-dn.net/?f=K_w%3DK_a%5Ctimes%20K_b)
Where :
= Ionic prodcut of water
The value of the first ionization constant of sodium sulfite = ![K_{a1}=1.4\times 10^{-2}](https://tex.z-dn.net/?f=K_%7Ba1%7D%3D1.4%5Ctimes%2010%5E%7B-2%7D)
The value of
:
![1\times 10^{-14}=1.4\times 10^{-2}\times K_{b1}](https://tex.z-dn.net/?f=1%5Ctimes%2010%5E%7B-14%7D%3D1.4%5Ctimes%2010%5E%7B-2%7D%5Ctimes%20K_%7Bb1%7D)
![K_{b1}=\frac{1\times 10^{-14}}{1.4\times 10^{-2}}=7.1\times 10^{-13}](https://tex.z-dn.net/?f=K_%7Bb1%7D%3D%5Cfrac%7B1%5Ctimes%2010%5E%7B-14%7D%7D%7B1.4%5Ctimes%2010%5E%7B-2%7D%7D%3D7.1%5Ctimes%2010%5E%7B-13%7D)
The value of the second ionization constant of sodium sulfite = ![K_{a2}=6.3\times 10^{-8}](https://tex.z-dn.net/?f=K_%7Ba2%7D%3D6.3%5Ctimes%2010%5E%7B-8%7D)
The value of
:
![1\times 10^{-14}=6.3\times 10^{-8}\times K_{b1}](https://tex.z-dn.net/?f=1%5Ctimes%2010%5E%7B-14%7D%3D6.3%5Ctimes%2010%5E%7B-8%7D%5Ctimes%20K_%7Bb1%7D)
![K_{b1}=\frac{1\times 10^{-14}}{6.3\times 10^{-8}}=1.6\times 10^{-7}](https://tex.z-dn.net/?f=K_%7Bb1%7D%3D%5Cfrac%7B1%5Ctimes%2010%5E%7B-14%7D%7D%7B6.3%5Ctimes%2010%5E%7B-8%7D%7D%3D1.6%5Ctimes%2010%5E%7B-7%7D)
The 38 elements in groups 3 through 12 of the periodic table are called "transition metals". As with all metals, the transition elements are both ductile and malleable, and conduct electricity and heat. The interesting thing about transition metals is that their valence electrons, or the electrons they use to combine with other elements, are present in more than one shell. This is the reason why they often exhibit several common oxidation states. There are three noteworthy elements in the transition metals family. These elements are iron, cobalt, and nickel, and they are the only elements known to produce a magnetic field I HOPE THIS HELP:)
<u>Answer:</u>
3.67 moles
<u>Step-by-step explanation:</u>
We need to find out the number of
moles present in 350 grams of a compound.
Molar mass of
= 24.305
Molar mass of
= 35.453
So, one mole of
= 24.305 + (35.453 * 2) = 95.211g
1 Mole in 1 molecule of
= ![\frac{1}{95.211} = 0.0105](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B95.211%7D%20%3D%200.0105)
Therefore, number of moles in 350 grams of compound = 0.0105 * 350
= 3.67 moles
Answer: Hydrochloric acid poses a various health risk