2 years ago

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Chemistry

2 answers:

vodka [1.7K]2 years ago

8 0

So basically if you subtract x from pi, you get 2398,199366

Sedaia [141]2 years ago

7 0

Answer: :)

Explanation:

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Question 3 (2 points)

Mademuasel [1]

Answer:sksk

Explanation:sksk

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3 years ago

A monoprotic weak acid, HA , dissociates in water according to the reaction HA(aq)↽−−⇀H+(aq)+A−(aq) The equilibrium concentratio

Pachacha [2.7K]

Answer:

$pK_{a}$ of HA is 6.80

Explanation:

$pK_{a}=-logK_{a}$

Acid dissociation constant ( $K_{a}$ ) of HA is represented as-

$K_{a}=\frac{[H^{+}][A^{-}]}{[HA]}$

Where species inside third bracket represents equilibrium concentrations

Now, plug in all the given equilibrium concentration into above equation-

$K_{a}=\frac{(2.00\times 10^{-4})\times (2.00\times 10^{-4})}{0.250}$

So, $K_{a}=1.6\times 10^{-7}$

Hence $pK_{a}=-log(1.6\times 10^{-7})=6.80$

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3 years ago

3.) All matter has both physical and chemical properties. A physical property is one that does not change the chemical nature of

dexar [7]

Answer:

Explanation:

It would be D because you are observing the reaction and don’t change anything

8 0

3 years ago

What are prevailing winds?

Tems11 [23]

Answer:

D) winds that blow in the same direction at a consistent speed

Explanation:

i took the quiz got it right so i know the answer please trust me i know this is right i promise with all my heart

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3 years ago

What is the main product of the fusion reactions in our sun?

RUDIKE [14]

The sun generates its energy by nuclear fusion of hydrogen nuclei into helium.

8 0

4 years ago