3 years ago

Electrons in an atom are arranged in shells called:

Chemistry

1 answer:

daser333 [38]3 years ago

7 0

Answer:

A) Energy levels

Explanation:

I remembered it. IDK why.

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Write the balanced equation. Then calculate the volume of 0.65 M HCl required to completely neutralize 400.0 ml of 0.88 M KOH.

Misha Larkins [42]

Hello!

The balanced equation for the neutralization of KOH is the following:

HCl(aq) + KOH(aq) → KCl(aq) + H₂O(l)

To calculate the volume of HCl required, we can apply the following equation:

$moles HCl = moles KOH \\ \\ cHCl*vHCl=cKOH*vKOH \\ \\ vHCl= \frac{cKOH*vKOH}{cHCl}= \frac{400 mL*0,88M}{0,65M}= 541,54mL$

So, the required volume of HCl is 541,54 mL

Have a nice day!

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3 years ago

A mixture is -

garik1379 [7]

<span>a. a chemical combination of two or more different materials.

For example: </span>For example, air is a mixture of gases, containing N, O, Ar, CO2

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3 years ago

I don't understand how to do these two questions, can someone explain?

Tamiku [17]

This is for bio correct

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7nadin3 [17]

I believe this process is called fixation

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4 years ago

Which of the following cannot be classified as a mixture

REY [17]

Answer:

B) Rubbing alcohol

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