The most difficult concept will be the concept of patient drug tolerance because there are many drugs that have different side effects for different patients. Therefore, it is necessary to understand the response of certain drugs to different patients. This will help avoid wrong drug combinations. This can cause side effects.
To learn more about this concept, you need to do your homework on these different drugs and the tolerance reactions you may experience, and attend some drug tolerance seminars, where the speaker will give you more ideas . And a further explanation of the concept.
Another topic in chemistry that is most tough to understand is moles. We can understand this concept by understanding the fact mole is an amount of a substance which may be atoms, molecules, ions, etc which have exactly 6.02214076 * 1023 'elementary entities' of the substance.
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There are 342.29648 grams in 1 molecule
Answer:
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Explanation:
Answer:
⇒ 3.312 E-13 mol Ni(OH)2 are soluble in 1 L of solution (NaOH)
Explanation:
S S 2S + 0.0218
∴ pKsp Ni(OH)2 = 15.8 = -Log Ksp
⇒ Ksp = 1.585 E-16 = [ Ni2+ ] * [ OH- ]²
∴ pH = 12.34
⇒ pOH = 14- 12.34 = 1.66 = - Log [ OH- ]
⇒ [ OH- ] = 0.0218 M
⇒ Ksp = 1.585 E-16 = S * ( 2S + 0.0218 )²
if we compare the concentration ( 0.0218 ) with the Ksp ( 1.585 E-16 ), then we can neglect the solubility as adding
⇒ 1.585 E-16 = S * ( 0.0218 )²
⇒ 1.585 E-16 = 4.786 E-4 * S
⇒ S = 3.312 E-13 mol/L
∴ soluble moles Ni(OH)2 = 3.312 E-13 mol/L * 1 L Sln = 3.312 E-13 moles
⇒ % S = ( 3.312 E-13 / 0.0218 ) * 100 = 1.513 E-11 %.....we can accept the previous assumption.
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