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zhenek [66]
2 years ago
9

What is arranged to form a material with a crystal structure

Chemistry
1 answer:
mafiozo [28]2 years ago
3 0

Answer:

A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. The scientific study of crystals and crystal formation is known as crystallography.

Explanation:

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Calculate the pH of a solution that is 0.235M benzoic acid and 0.130M sodium benzoate, a salt whose anion is the conjugate base
lesantik [10]

Hello!

We have the following data:

ps: we apply Ka in benzoic acid to the solution.

[acid] = 0.235 M (mol/L)

[salt] = 0.130 M (mol/L)

pKa (acetic acid buffer) =?

pH of a buffer =?

Let us first find pKa of benzoic acid, knowing that Ka (benzoic acid) = 6.20*10^{-5}

So:

pKa = - log\:(Ka)

pKa = - log\:(6.20*10^{-5})

pKa = 5 - log\:6.20

pKa = 5 - 0.79

\boxed{pKa = 4.21}

Now, using the abovementioned data for the pH formula of a buffer solution or (Henderson-Hasselbalch equation), we have:

pH = pKa + log\:\dfrac{[salt]}{[acid]}

pH = 4.21 + log\:\dfrac{0.130}{0.235}

pH = 4.21 + log\:0.55

pH = 4.21 + (-0.26)

pH = 4.21 - 0.26

\boxed{\boxed{pH = 3.95}}\end{array}}\qquad\checkmark

Note:. The pH <7, then we have an acidic solution.

I Hope this helps, greetings ... DexteR! =)

8 0
2 years ago
Define ""point source pollution"" and ""non-point pollution"".
Marina86 [1]

Answer:

Point source pollution:

 If pollution comes from a fix source then is called point source pollution.It have a specific location where pollution comes.

Ex: Air pollution ,water pollution.

Non point source pollution:

 If pollution comes from number of sources then is called point source pollution.This pollution does not have a specific point of source.

Ex: Spills ,leaks ,Sewage over flow etc.

7 0
2 years ago
Read 2 more answers
Sexual reproduction relies on meiosis instead of mitosis because only meiosis produces diploid sex cells. T or F
posledela
I'm pretty sure that is true. not 100% sure but hope this is right. sorry if wrong!
5 0
2 years ago
Q.3 Which the following statements about the given reaction are correct:
gregori [183]

Answer:

The statements which are correct are;

c) (i), (ii) and (iv)

Explanation:

The chemical equation is presented as follows;

2Fe(s) + 3H₂O(g) → 3Fe₂O₃(s) + 3H₂(g)

Therefore, we have;

i) The iron gains oxygen atoms and therefore gets oxidized

The iron loses 3 electrons each to become oxidized to Fe³⁺ in Fe₂O₃

ii) The water loses oxygen and therefore it is getting reduced

iv) The water donates oxygen and therefore it is acting as the oxidizing agent

The correct options are (i), (ii) and (iv).

8 0
3 years ago
2. How many atoms of carbon are in a 0.150 mole sample?
Aleonysh [2.5K]
Answer- 12.01 or 6.022x10^23
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3 years ago
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