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4 years ago

What was Ernest Rutherford's experiment?

Chemistry

1 answer:

Dafna1 [17]4 years ago

6 0

Answer:

C. He shot tiny alpha particles through a piece of gold foil.

Explanation:

In the year 1911, Ernest Rutherford performed the gold foil experiment which gave a deeper perspective to the structure of an atom.

He simply collided a thin gold foil with an alpha particle which he generated from a radioactive source. He discovered that most of the alpha particles passed through the thin gold foil but a few were deflected back. His discovery led to the proposition of the nuclear model of the atom.

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How does the temperature of absolute zero relate to the kinetic energy of a substance?

NeX [460]

At absolute zero the kinetic energy of the substance will be 0

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4 years ago

Which equation represents a change that results in an increase in disorder?(1 ) I2(s)=>I2(g)

ankoles [38]

Answer : The correct option is, (1) $I_2(s)\rightarrow I_2(g)$

Explanation :

Entropy : It measures the disorderedness or randomness of the molecule.

That means higher the disorderedness, higher will be the entropy.

As we are going from solid state to liquid state, liquid state to gaseous state, the disorderedness increases due to the less inter-molecular interaction between the molecules.

And, as we are going from gaseous state to liquid state, liquid state to solid state, the disorderedness decreases due to the more inter-molecular interaction between the molecules.

(1) $I_2(s)\rightarrow I_2(g)$

In this reaction, the disorderedness increases because the state changes from solid to liquid.

(2) $CO_2(g)\rightarrow CO_2(s)$

In this reaction, the disorderedness decreases because the state changes from gaseous to solid.

(3) $2Na(s)+Cl_2(g)\rightarrow 2NaCl(s)$

In this reaction, the disorderedness decreases because the state changes from gaseous to solid.

(4) $2H_2(g)+O_2(g)\rightarrow 2H_2O(l)$

In this reaction, the disorderedness decreases because the state changes from gaseous to liquid.

Hence, the correct option is, (1) $I_2(s)\rightarrow I_2(g)$

8 0

3 years ago

Read 2 more answers

How is a cation different from a anion

masya89 [10]

Cation means a positively charged ion. Anion is a negative one

5 0

3 years ago

Ethylene glycol is a compound used in automotive antifreeze. It is odorless, colorless, and toxic if ingested. Adding ethylene g

const2013 [10]

Answer: Andre. If it is used as an antifreeze, one would infer that it's freezing point is less than water.

Explanation:

The freezing point of ethylene glycol alone (100%) is -12.9oC. That is somewhat less than the freezing point of water but nowhere near the freezing point of water containing 70% ethylene glycol.

8 0

4 years ago

10. An atom that has 13 protons and 13 electrons is a neutral aluminum (Al) atom. An atom that has 13 protons and 10 electrons i

kotegsom [21]

Answer:

An atom of Al which has 13 protons and 10 electrons is Al cation (Al⁺³)

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other.

For example,

Al atom has 13 protons and 13 electrons. The number of positive and negative charge is equal thus it will be neutral atom.

While the atom of Al which have 13 proton and 10 electron is not neutral. The positive charge is greater than negative by 3. Which means 3 electrons are lose by Al atom and form cation "Al⁺³".

Thus an atom of Al which has 13 protons and 10 electrons is Al cation (Al⁺³)

3 0

4 years ago