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alexandr1967 [171]
3 years ago
14

CLIC 3. The blank is the central part of an atom.​

Chemistry
1 answer:
lorasvet [3.4K]3 years ago
6 0

Answer:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).

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Write the balanced chemical equation for the extraction of iron in the thermite reaction.
blagie [28]

In the given chemical reaction iron is less electropositive metal and aluminum is more electropositive and behave as a reducing agent also.

<h3>What is electropositivity?</h3>

Electropositivity is the ability of an atom of donation or losing of electrons easily.

From the given chemical reaction it is clear that oxidation state of iron changes from +3 to 0 & of aluminum is from 0 to +3. So in the above chemical reaction aluminum is more electropositive than iron metal. And aluminum is behave as a reducing agent as it helps in the reduction process by providing electrons.

Hence aluminum is electropositive metal and reducing agent, iron is less electropositive.

To know more about electropositivity, visit the below link:
brainly.com/question/21819287

#SPJ1

4 0
2 years ago
If you multiply 1/2 X 1/2 what will you get as you answer
myrzilka [38]
One half times one half is .25 or 25%
4 0
3 years ago
Read 2 more answers
Which of the following observations indicates that an atom has neutrons?
olganol [36]

Answer:

The correct answer is C: A radiation consisting of uncharged particles is emitted when alpha particles strike beryllium atoms.

Explanation:

Chadwick discovered neutron while experimenting with a gold foil. A stream of alpha particles produced from a polonium source was directed at beryllium target. It was noticed that some penetrating radiations were produced. These uncharged particles were called neutrons because on the charge detector these particles showed no deflection.

Their nuclear reaction is as follow.

                             ₂He + ₄Be ----------> ₀n + ₆C

Chadwick noticed that neutrons cannot ionize gases and are highly penetrating particles.

8 0
4 years ago
Read 2 more answers
I need help with problems 11-13 please. I’m very confused on how to find Volume when there’s no specific shapes and numbers.
Rudik [331]

Answer:

To find volume you can either look at the displacement of the water or Length•Width•Height

Explanation:

11) 12

12) 340 mL

13) 196 m\

8 0
3 years ago
When writing equations the mass on the left of the arrow must
sp2606 [1]

Answer:

When writing equation the mass on left side of equation must be equal to the mass on right side. True

Explanation:

The chemical reactions always follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass because total mass is equal on both side of equation.

6 0
4 years ago
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