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3 years ago

Read the article and answer the 6 questions in it.

Chemistry

2 answers:

Sliva [168]3 years ago

7 0

Answer:

Yea.....where is the article and the 6 questions?

boyakko [2]3 years ago

7 0

Answer:

Answering

Explanation:

do u want us to tell u what we got?

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The answer and the work please

Murljashka [212]

Answer:

for what?

Explanation:

8 0

3 years ago

Why is pure silicon a poor conductor at room temperature?

Georgia [21]

Because pure silicon is a perfect semiconductor.

For room temperature, it rarely conducts, you can search for the threshold temperature, the characteristic equation is fairly complicated.

5 0

3 years ago

Calcular la cantidad de NaOH necesaria para preparar medio litro de disolución 2,5 N. (Dato: peso molecular del NaOH = 40 g/mol)

kolbaska11 [484]

Answer:

The amount of NaOH required to prepare a solution of 2.5N NaOH.

The molecular mass of NaOH is 40.0g/mol.

Explanation:

Since,

NaOH has only one replaceable -OH group.

So, its acidity is one.

Hence,

The molecular mass of NaOH =its equivalent mass

Normality formula can be written as: $Normality=\frac{mass of solute NaOH}{its equivalent mass} * \frac{1}{volume of solution in L} \\$

Substitute the given values in this formula to get the mass of NaOH required.

$2.5N=\frac{mass of NaOH}{40g/mol} *\frac{1}{1L} \\mass of NaOH=2.5N*40gmol\\ = 100.0g$

Hence, the mass of NaOH required to prepare 2.5N and 1L. solution is 100g

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3 years ago

What provides the energy to set the water cycle in motion?

romanna [79]

Where is the question

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3 years ago

Help please I got the back but I’m struggling with the front

musickatia [10]

41. Mercury,Venus, Earth,mars,Jupiter, Saturn,Uranus and Neptune
42. Nebula - Their birth places are huge, cold clouds of gas and dust

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4 years ago