What do you mean by corrosion? How can you prevent it?

2 answers:

6 0

Corrosion is the gradual destruction of materials by chemical reaction with the environment.It can be prevented by galvanisation.

Jlenok [28]3 years ago

3 0

Corrosion is the gradual destruction of materials (usually metals) by chemical reaction with its environment.

prevention of corrosion:
corrosion can be prevented by endowing the metal to be protected with a negative charge.

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Melamine is used for making

vodomira [7]

Answer:

Melamine is used for making tableware,cooking utensils, plates, plastic products etc.

Explanation:

Melamine is used to manufacture many products. How? Well melamine-formaldehyde resin, as it's full name, forms molecular structures that are molded, with heat, to take the shape of the items such as tableware.

After this chemical reaction takes place, the "left over" remains as plastic.

_________________________________________________

And so, it is used in products such as cooking utensils, plates, plastic products etc.

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PIT_PIT [208]

A solution is usualy a diluted liquid that cleans for example bleach solution.

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2. (2 pts) How would you prepare 1.5 liters of 2 M KCI (MW=74.55 g/mol)

ra1l [238]

Answer:

Dissolve 226 g of KCl in enough water to make 1.5 L of solution

Explanation:

1. Calculate the moles of KCl needed

$n = \text{1.5 L} \times \dfrac{\text{2 mol}}{\text{1 L}}= \text{3.0 mol}$

2. Calculate the mass of KCl

$m = \text{3.0 mol} \times \dfrac{\text{74.55 g}}{\text{1 mol}}= \text{224 g}$

3. Prepare the solution

Measure out 224 g of KCl.
Dissolve the KCl in a few hundred millilitres of distilled water.
Add enough water to make 1.5 L of solution. Mix thoroughly to get a uniform solution.

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Two completely different compounds may contain identical elements.<br><br> True<br> False

lesantik [10]

True.

For example: Sodium oxide and Nitric acid; both compounds contain oxygen.

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The atomic number of carbon is 6. carbon-14 is heavier than carbon-12 because the atomic nucleus of carbon-14 contains _____ neu

RSB [31]

14-6=8
8 neutrons is the answer

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