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3 years ago

Explain why you cannot just take away a proton to make a halogen negative.

Chemistry

1 answer:

Ilia_Sergeevich [38]3 years ago

6 0

The force that holds protons and neutrons together is too strong to overcome.

<h3>Explanation</h3>

Consider the location of the particles in an atom.

Electrons are found outside the nucleus.
Protons and neutrons are found within the nucleus.

Protons carry positive charges and repel each other. The nucleus will break apart without the strong force that holds the protons and neutrons together. This force is much stronger than the attraction between the nucleus and the electrons. X-rays are energetic enough for removing electrons from an atom. However, you'll need a collider to remove protons from a stable nucleus. You could well have ionized the atom with all that energy.

Also, changing the number of protons per nucleus will convert the halogen atom to an atom of a different element. Rather than making the halogen negative, removing a proton will convert the halogen atom to the negative ion of a different element.

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Consider the reaction of 35.0 g of iron as follows:

77julia77 [94]

Explanation:

4Fe + 3O2 --> 2Fe2O3

Mass of iron = 35g

<em>How many moles of iron react?</em>

The relationship between mass and moles is given as;

Moles = mass / Molar mass

Molar mass of iron = 56g/mol

Number of moles = 35 / 56 = 0.625 mol

<em>How many moles of oxygen molecules must react?</em>

From the equation of the reaction;

4 mol of Fe reacts with 3 mol of Oxygen molecule

0.625 mol would react with x mol?

4 = 3

0.625 = x

x = 0.625 * 3 / 4 = 0.46875 mol

<em>How many moles of product form?</em>

From the equation of the reaction;

4 mol of Fe reacts to form 2 mol of Fe2O3

0.625 mol would form x mol of Fe2O3

4 = 2

0.625 = x

x = 0.625 * 2 / 4 = 0.3125 mol

<em>What mass of product forms?</em>

Moles = mass / Molar mass

Mass = Molar mass * Moles = 159.69 g/mol * 0.3125 mol = 49.9g

8 0

4 years ago

How many ml of 95% of ethyl alcohol should be added to sterile water for injection to make 1/2 liter of a 40% ethyl alcohol solu

rosijanka [135]

Answer:

V = 210.5 mL

Explanation:

V1C1 = V2C2

∴ C1 = 0.95

∴ C2 = 0.40

∴ V2 = 0.500 L

⇒ V1 = ((0.50)(0.40))/(0.95)

⇒ V1 = 0.2105 L

4 0

3 years ago

Find the element. plz help!

bulgar [2K]

Answer:

the element to be found is helium(He)

3 0

3 years ago

In the first 22.0 s of this reaction, the concentration of HBr dropped from 0.590 M to 0.465 M . Calculate the average rate of t

Alex

This is an incomplete question, here is a complete question.

Consider the following reaction:

$2HBr(g)\rightarrow H_2(g)+Br_2(g)$

In the first 22.0 s of this reaction, the concentration of HBr dropped from 0.590 M to 0.465 M . Calculate the average rate of the reaction in this time interval.

Answer : The average rate of reaction is, $6.25\times 10^{-3}M/s$