PH + PoH is equal to 14.
You’re given the concentration of OH. Taking the logarithm of that (log [OH]) gives you PoH. Subtract 14 from answer to get PH. Hope that helps :-)
Answer:
the correct answer is 23:19
Answer:
- 0.0062AU
- 0.00082.
- 106.7% error
Explanation:
a.) Average or mean value of readings,
= (0.0044 + 0.0079 + 0.0062) / 3
=
= 0.0062 AU
b.) The accuracy of the readings is determined by taking determining the standard deviation (SD) of the readings:
SD = ∑
/n
= 0.0000032
= 0.00000289
= 0
SD =
= 0.00082.
c.) The % accuracy is the distance between the average value and true value
=
= 106.7% error.
Answer:
1s2 2s2 2p6
Explanation:
The nitride ion(N^3-) is formed when nitrogen gains three electrons. Nitrogen possesses seven electrons in its orbitals and ordinarily has the electronic configuration; 1s2 2s2 2p3. However,being in group 15, nitrogen can accept three electrons to form the nitride ion and complete its octet of electrons. When this happens, three electrons are added to the nitrogen atom and the electronic configuration is now the same as that of Neon, its closest noble gas which is 1s2 2s2 2p6. Hence the answer given above.
Elements can accept or donate electrons in order to complete their octet structure in accordance to the octet rule which states that atoms and ions must possess eight electrons in their outermost shell in order to attain chemical stability. The reason for ion formation and chemical reaction is in order for species to attain the octet structure.