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3 years ago

13

Which of the following elements would be the most reactive?

2 answers:

Aleksandr-060686 [28]3 years ago

7 0

I think it's Chlorine but, not 100% sure. so C.

spin [16.1K]3 years ago

6 0

I know for sure it is C. Chlorine

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38) Which of the following is not a reaction of alcohol

mylen [45]

<h2>I guess...</h2>

<h3>Dehydration </h3>

8 0

3 years ago

How does a network solid differ from most other covalent compounds

blondinia [14]

Answer:

Covalent compounds are held by intermolecular forces while network solids are held by strong bonds in unit cells which are closely packed together.

Explanation:

Covalent compound molecules are held by vanderwaals forces which are relatively weak but strong enough to hold some covalent molecules together in the solid state. However, network solids contain atom to atom covalent bonds arranged in an orderly manner and regular repeating unit cells to form a rigid three dimensional network solid.

5 0

3 years ago

For some hypothetical metal, the equilibrium number of vacancies at 600°C is 1 × 1025 m-3. If the density and atomic weight of t

makvit [3.9K]

Answer:

$\frac{N_{v}}{N}=1.92*10^{-4}$

Explanation:

First of all we need to find the amount of atoms per volume (m³). We can do this using the density and the molar mass.

$7.40 \frac{g}{cm^{3}}*\frac{1mol}{85.5 g}*\frac{6.023*10^{23}atoms}{1mol}*\frac{1000000 cm^{3}}{1m^{3}}=5.21*10^{28}\frac{atoms}{m^{3}}$

Now, the fraction of vacancies is equal to the N(v)/N ratio.

N(v) is the number of vacancies $1*10^{25}m^{-3}$
N is the number of atoms per volume calculated above.

Therefore:

The fraction of vacancies at 600 °C will be:

$\frac{N_{v}}{N}=\frac{1*10^{25}}{5.21*10^{28}}$

$\frac{N_{v}}{N}=1.92*10^{-4}$

I hope it helps you!

7 0

3 years ago

If high tide occurs at 6:00 am, when will the next high tide occur?

Zepler [3.9K]

High tides occur 12 hours and 2 minutes apart do it would be at 6:25 pm

8 0

2 years ago

Read 2 more answers

You have 34.1 x 1023 molecules of O2. How many moles of O2 do you have? Fill in the grid. Then, solve the problem and answer the

denis-greek [22]

Number of moles = 5.7 moles of oxygen.

<u>Explanation:</u>

We have to convert number of molecules into number of moles by dividing the number of molecules by Avogadro's number.

Here number of molecules of oxygen given is 34.1 × 10²³ molecules.

Now we have to divide the number of molecules by Avogadro's number as,

Number of moles = $$\frac{number of molecules}{Avogadro's number}$

= $$\frac{34.1}{6.022} \times \frac{10^{23} }{10^{23} }$

= 5.7 moles

So here molecules is converted into moles.

5 0

3 years ago