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3 years ago

Draw an electron

Chemistry

1 answer:

butalik [34]3 years ago

3 0

Answer:

. .

: Ne :

. .

Explanation:

Let's take Neon as our example. In the Lewis dot structure, each dot corresponds to an electron in the valence shell of the atom. All atoms like to have a full valence shell. By the octet rule, this means that they need 8 electrons total to be electronically satisfied. Noble gases all have a full valence shell in their natural state. This is why they are inert, as they do not need extra electrons to be electronically satisfied.

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Someone please help me plz :(please

3241004551 [841]

Answer:

Explanation:

the actual change in phase is 4 on the diagram

3 0

3 years ago

To make a 450g solution with a mass by mass concentration of 7%, how much salt and water do you need to mix?

Yuri [45]

Explanation:

The given data is:

The mass% of a solution is 7.

Mass of solution =450g

The mass of salt required can be calculated as shown below:

$mass percent =(mass of solute/mass of solution )x100\\$

Substitute the given values in this formula to get the mass of solute that is salt:

$mass percent =(mass of solute/mass of solution )x100\\\\7=\frac{mass of salt}{450g} x100\\=>mass of salt=7x450g /100\\mass of salt=31.5g$

Mass of salt =31.5g

Mass of solvent that is water = 450g-31.5g=418.5g

4 0

3 years ago

Which of the following is referenced in the modern "periodic law"

katovenus [111]

Atomic number is correct

4 0

3 years ago

Calcium carbonate is most likely to dissolve in water with which characteristics?

Marysya12 [62]

Calcium carbonate is most likely to dissolve in water with:

e. Lots of Carbon dioxide and colder temperature.

Explanation:

Calcium carbonate is very sparingly soluble in water. However, it has been observed to dissolve in cold water with higher concentration of Carbon dioxide.
The reason behind the observation is the formation of Calcium bicarbonate which is soluble in water.
Higher concentration of Carbon dioxide in water turns it acidic. When this acidic water reacts with calcium carbonate it forms Calcium bicarbonate which is soluble in water.
So,Calcium carbonate is most likely to dissolve in water with lots of Carbon dioxide and colder temperature.

4 0

3 years ago

What material do we get from trees that is burnt as a fuel and releases carbon dioxide into the

HACTEHA [7]

Answer:

not quite sure what you meant by the question but I think the answer you're looking for is biomass? not sure though

3 0

3 years ago