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SSSSS [86.1K]
3 years ago
10

6th grade science I mark as brainliest zoom in if needed

Chemistry
1 answer:
RideAnS [48]3 years ago
5 0
A is the correct answer m


Tell me if I’m right or wrong

Thank you and yeah that’s it please inform me djdjdendrd
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What is the hydronium ion concentration of a 0.100 M acetic acid solution with Ka = 1.8 × 10-5? The equation for the dissociatio
evablogger [386]

Answer:

1.3×10⁻³ M

Explanation:

Hello,

In this case, given the dissociation reaction of acetic acid:

CH_3CO_2H(aq) + H_2O(l) \rightleftharpoons H_3O^+(aq) + CH_3CO_2^-(aq)

We can write the law of mass action for it:

Ka=\frac{[H_3O^+][CH_3CO_2^-]}{[CH_3CO_2H]}

Of course, excluding the water as heterogeneous substances are not included. Then, in terms of the change x due to the dissociation extent, we are able to rewrite it as shown below:

1.8x10^{-5}=\frac{x*x}{0.100-x}

Thus, via the quadratic equation or solve, we obtain the following solutions:

x_1=-0.00135M\\x_2=0.00133M

Obviously, the solution is 0.00133M which match with the hydronium concentration, thus, answer is: 1.3×10⁻³ M in scientific notation.

Regards.

8 0
3 years ago
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What is the initial temperature of 50g of water that was raised to 50*C by the addition of 4.18kJ of heat energy? (2 sig fig)
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Answer:

50

Explanation:

7 0
3 years ago
Predict the formula for a compound made from X3 and Y3–.
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Well, a compound has a total charge of 0. So, it's electrically neutral. Since the X is 3+ and the Y is 3- they add to 0. Meaning no subscripts are necessary. Why don't you try a different combo?

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A^3 and B^1-, to get a 3- charge you need 3xB^1- so the formula is AB3

Does this help?  
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That means NO, not all single bonds are sigma bond, but all sigma bonds are single bonds. 
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What is most likely oxidation state of aluminum (AI)?
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