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3 years ago

I NEED A WORK EQUATION AGAIN HELLPPP PPLS!!!

Chemistry

2 answers:

Svetach [21]3 years ago

8 0

Answer:

calcium+ethanoic acid= carbon dioxide + water

Zinc + ethanoic acid= zinc ethanoate+water

ioda3 years ago

5 0

Answer:

calcium + ethanoic acid → calcium ethanoate + water

zinc + ethanoic acid → zinc ethanoate + water

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How many days pass until the exact same Moon shape reappears?

Troyanec [42]

22 because that how many days it will take for the exact moon shape to pass and it will then reappear.

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4 years ago

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0144 0.0144 M solution. The pH of the resulting solution i

alexdok [17]

Answer:

The value of dissociation constant of the monoprotic acid is $1.099\times 10^{-3}$ .

Explanation:

The pH of the solution = 2.46

$pH=-\log[H^+]$

$2.46=-\log[H^+]$

$[H^+]=0.003467 M$

$HA\rightleftharpoons H^++A^-$

Initially

0.0144 0 0

At equilibrium

(0.0144-x) x x

The expression if an dissociation constant is given by :

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

$K_a=\frac{x\times x}{(0.0144-x)}$

$x=[H^+]=0.003467 M$

$K_a=\frac{0.003467 \times 0.003467 }{(0.0144-0.003467 )}$

$K_a=1.099\times 10^{-3}$

The value of dissociation constant of the monoprotic acid is $1.099\times 10^{-3}$ .

3 0

4 years ago

Can someone help me with this I've been stuck on it for a few days

Fiesta28 [93]

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