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mariarad [96]
3 years ago
15

How do you know if a element is neutral?

Chemistry
1 answer:
Oksanka [162]3 years ago
7 0
When the neutrons and electrons are the same. For example, sodium (Na) has an atomic mass of 11, meaning it has 11 protons and 11 electrons etc.
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There are islands in the ocean that grow larger the Hawaiian islands are good examples of this the reason that the islands were
vredina [299]

Explanation:

The reasons that islands formed are still growing is simply because newer materials are being added to them.

  • A growing earth is as a result of addition of more materials arising from the mantle.
  • Generally, Volcanic islands forms as a result of magma that reaches the surface or ocean floor from deeper part of the earth.
  • This usually occurs in places around a plate boundary where materials upwells from the asthenosphere or shallow crustal melting.
  • As more materials are being melted, more also reaches the surface and continues to make the Island grow.

Learn more:

Volcanic eruptions brainly.com/question/5055821

#learnwithBrainly

3 0
3 years ago
How many moles of aluminum are equivalent to 4.816 × 1024 atoms?
VladimirAG [237]

Answer:

6.591

Explanation:

= 6.951 moles

3 0
3 years ago
Read 2 more answers
A gas that occupies 50.0 liters has its volume increased to 68 liters when the pressure was changed to 3.0 ATM. What was the ori
Yuliya22 [10]

Answer:

4.1 atm = 3,116 mmHg = 415.4 kPa

Explanation:

According to Boyle's law, as volume is increased the pressure of the gas is decreased. That can be expressed as:

P₁ x V₁= P₂ x V₂

Where P₁ and V₁ are the initial pressure and volume respectively, and P₂ and V₂ are final pressure and volume, respectively.

From the problem, we have:

V₁= 50.0 L

V₂= 68.0 L

P₂= 3.0 atm

Thus, we calculate the initial pressure as follows:

P₁= (P₂ x V₂)/V₁= (3.0 atm x 68.0 L)/(50.0 L)= 4.08 atm ≅ 4.1 atm

To transform to mmHg, we know that 1 atm= 760 mmHg:

4.1 atm x 760 mmHg/1 atm = 3,116 mmHg

To transform to kPa we use: 1 atm= 101.325 kPa

4.1 atm x 101.325 kPa = 415.4 kPa

5 0
2 years ago
PLS ANSWER FAST AHAH<br><br> distilled water is a pure substance <br> true or false ?
mr Goodwill [35]

Answer:

True

Explanation:

If you see distilled water, it's a pure substance. That means that there are only water molecules in the liquid. A mixture would be a glass of water with other things dissolved inside, like one of those powders you take if you get sick or Kool-Aid.

3 0
3 years ago
Which of the following ions is a polyatomic ion?
nlexa [21]
Among the choices, the polyatomic ion is only the third choice, NH4+ where it is composed of nitrogen one atom of nitrogen and 4 atoms of hydrogen. Choice 2 is a monoatomic atom being composed only of calcium. Then, the first and fourth choices are not ions because they are not charged.
4 0
3 years ago
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