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Nana76 [90]
3 years ago
9

WILL GIVE BRAINLIEST

Chemistry
1 answer:
joja [24]3 years ago
3 0

Answer:

Silver fluoride because it is the most soluble compared to the others.

Explanation:

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You have 50 ml of a complex mixture of weak acids that contains some HF (pKa = 3.18) and some HCN (pKa = 9.21). Which is larger,
bonufazy [111]

Answer:

\frac{[F^{-}]}{[HF]} is larger

Explanation:

pK_{a}=-logK_{a} , where K_{a} is the acid dissociation constant.

For a monoprotic acid e.g. HA, K_{a}=\frac{[H^{+}][A^{-}]}{[HA]} and \frac{[A^{-}]}{[HA]}=\frac{K_{a}}{[H^{+}]}

So, clearly, higher the K_{a} value , lower will the the pK_{a}

In this mixture, at equilibrium, [H^{+}] will be constant.

K_{a} of HF is grater than K_{a} of HCN

Hence, (\frac{F^{-}}{[HF]}=\frac{K_{a}(HF)}{[H^{+}]})>(\frac{CN^{-}}{[HCN]}=\frac{K_{a}(HCN)}{[H^{+}]})

So, \frac{[F^{-}]}{[HF]} is larger

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3 years ago
What is sexual selection? *
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Answer:

B: The behaviors an animal must display in order to find a mate

Explanation:

An animal usually looks for specific characteristic in order for their offspring to develop those same characteristics and be able to survive

6 0
2 years ago
In the ground state, which atom has a completely filled valence electron shell?(1) C (2) V (3) Ne (4)Sb
AVprozaik [17]
The answer is (3)Ne. Usually, the elements belongs to group 18 all have completely filled valence electron shell. Among the four elements carbon, vanadium, neon and antimony, only neon belongs to group 18.
7 0
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How is it determined the highest energy level an atom has
BaLLatris [955]

Answer:

C. Atomic mass

Explanation:

i just did the quiz and got 100 :) i hope I get brainiest answer

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2 years ago
10. Which term is same for one mole of O2 and one mole of ethane C2H6
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Answer:

b) Number of molecules

Explanation:

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2 years ago
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