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ipn [44]
3 years ago
9

1. please answer i really need your help

Chemistry
2 answers:
myrzilka [38]3 years ago
7 0
1. solve the bracket (OH)3= 3 Oxygen, 3 Hydrogen

2. multiply 2Fe with (OH)3= 2*3= 6, 2*3=6

3. solve 2FE3= 2*3= 6FE

4. Add all= 6Fe+ 6oxygen+ 6H= Total atom 18
elixir [45]3 years ago
6 0

Answer:

hm

Explanation:

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Which is a true statement?
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Answer: B) Particles can be filtered from a suspension.

Explanation: Colloids are solutions with particle size intermediate between true solutions and suspensions. They exhibit tyndall effect that is scattering of light.

Suspensions have large sized particles which settle when left undisturbed for sometime and thus can be filtered off easily.

The particle size in colloids is less and hence they do not settle under the effect of gravity.

A solution can be homogeneous in which the composition is uniform or heterogeneous in which is the composition is not uniform.


7 0
3 years ago
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Repulsion of electrons within two interacting molecules produces changes in electron distribution. This change in electron distr
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Answer:

D

Explanation:

This explains how two noble gases molecules can have an attractive force between them.

This force is called as van dar Waals forces.

It plays a fundamental role in fields in as diverse as supramolecular chemistry structural biology .

If no other forces are present, the point at which the force becomes repulsive rather than attractive as two atoms near one another is called the van der Waals contact distance. This results from the electron clouds of two atoms unfavorably coming into contact.[1] It can be shown that van der Waals forces are of the same origin as the Casimir effect, arising from quantum interactions with the zero-point field.[2] The resulting van der Waals forces can be attractive or repulsive.[3] It is also sometimes used loosely as a synonym for the totality of intermolecular forces.[4] The term includes the force between permanent dipoles (Keesom force), the force between a permanent dipole and a corresponding induced dipole (Debye force), and the force between instantaneously induced dipoles

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3 years ago
Which of the following statements correctly characterizes the subatomic particle
vichka [17]

Answer:

Its mass is about the same as that of a proton

Explanation:

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How is dry ice different from ordinary ice?
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Explanation:

•Hope this helps•

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