3 years ago

What happens to the particles in a substance as it freezes?

Chemistry

1 answer:

Ierofanga [76]3 years ago

8 0

they move around and eventually come and join to make a solid

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How many calories are there in 32 Calories?<br> a.64,000<br> b.16,000<br> C.32,000<br> D..032

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Answer:

Explanation:

There cannot be more in a number than the number. Therefore, the answer has to be D, or 32.

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2 years ago

Which particle has an electronic structure of 2.8.8?

alina1380 [7]

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Decreasing, Removing

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2 years ago

How many valance electrons does group #11 have?

galina1969 [7]

It would have 11 valance electrons.

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2 years ago

. How many milliliters of 0.20 M HCl are needed to exactly neutralize 40. milliliters of 0.40 M KOH

Anuta_ua [19.1K]

Answer:

$V_{HCl}=80mL$

Explanation:

Hello,

In this case, for the given reactants we identify the following chemical reaction:

$KOH+HCl\rightarrow KCl+H_2O$

Thus, we evidence a 1:1 molar ratio between KOH and HCl, therefore, for the complete neutralization we have equal number of moles, that in terms of molarities and volumes become:

$n_{HCl}=n_{KOH}\\\\M_{HCl}V_{HCl}=M_{KOH}V_{KOH}$

Hence, we compute the volume of HCl as shown below:

$V_{HCl}=\frac{M_{KOH}V_{KOH}}{M_{HCl}} =\frac{0.40M*40mL}{0.20M} \\\\V_{HCl}=80mL$

Best regards.

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2 years ago