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3 years ago

What are 3 reasons scientist found Rutherford's nuclear atomic model to be fundamentally incomplete

2 answers:

5 0

The three reasons that scientists found Rutherfor's nuclear atomic model to be fundamentally incomplete are as follows:
Number 1) according to Rutherford, the electrons revolve in completely circular orbits. However, if this was true the charged electron would simply fall into the nucleus after losing energy.
Number 2) According to Rutherford's model, the nucleus itself only consisted of protons. However, as we now know due to research in quantum mechanics, if this was true this would make the atom unstable due to the cycle of attraction and repulsion.
Number 3) The neutrons which have also been discovered since to be an important part of the atom, are not mentioned at all in Rutherford's model.

ikadub [295]3 years ago

5 0

The correct answer is:

1.how electrons are organized in a cloud

2. why electrons are not attracted into the positively charged nucleus

3. variations in chem behavior between elements

Explanation:

Rutherford reversed Thomson's model in 1911 with his popular gold foil research in which he confirmed that the atom has a tiny and massive nucleus. Rutherford created an experiment to practice the alpha particles released by a radioactive element as probes to the underground world of atomic structure.

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if a continental polar air mass is moving across the United States , what will likely happen to the regions of the country that

krek1111 [17]

Answer:

the same thing that happens to United states will happen to other regions

Explanation:

5 0

3 years ago

What factors could have affected your results?

AleksandrR [38]

Answer:

See below

Step-by-step explanation:

heat gained by metal + heat lost by water = 0

m₁C₁ΔT₁ + m₂C₂ΔT₂ = 0

C₁ = -(m₂C₂ΔT₂)/(m₁ΔT₁)

The factors determining C₁ are

mass of water
temperature change of water (T_f - Ti)
mass of metal
temperature change of metal (T_f - Ti)

Any factor that makes the numerator higher or the denominator lower than what you thought, will give a calculated C₁ that is too high (and vice versa).

The major sources of uncertainty are probably in determining the temperatures, especially the initial and final temperatures of the metal. However, you will have to decide what the principal factors were in your experiment.

For example, did the metal have a chance to cool during the transfer to the calorimeter? How easy was it to determine the equilibrium temperature, etc?

Factors Affecting the Calculation of Specific Heat Capacity

Too Low Too high

Water Water

Mass less than thought Mass more than thought

Ti lower Ti higher

T_f higher T_f lower

Metal Metal

Mass more than thought Mass less than thought

Ti higher Ti lower

8 0

3 years ago

When might you receive a blood transfusion Help me pls

umka21 [38]

Explanation:

in the case of blood loss, you need blood from someone with your blood type or with universal donor type

5 0

3 years ago

4.3 moles of a gas are at a temperature of 28 degrees * C with a pressure of 1.631 atm. What volume does the gas occupy?

Shkiper50 [21]

Answer:

65.2L

Explanation:

Using the general gas equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (Litres)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (Kelvin)

According to the information provided in this question,

P = 1.631 atm

V = ?

n = 4.3 moles

T = 28°C = 28 + 273 = 301K

Using PV = nRT

V = nRT/P

V = 4.3 × 0.0821 × 301 ÷ 1.631

V = 106.26 ÷ 1.631

V = 65.15

Volume of the gas = 65.2L

7 0

3 years ago

An alkene with the molecular formula C8H16 undergoes ozonolysis to yield a mixture of (CH3)2C=O and (CH3)3CCHO. The alkene is:

aalyn [17]

Answer:

2,4,4-trimethyl-2-pentene yields mixture of $(CH_{3})_{2}C=O$ and $(CH_{3})_{3}CHO$

Explanation:

In ozonolysis (hydrolysis step involve a reducing agent such as Zn, $Me_{2}S$ etc.), a pi bond is broken to form ketone/aldehyde.

Ketone is formed from di-substituted side of double bond and aldehyde is formed from mono-substituted side of double bond.

Ozoznolysis involves two consecutive steps : (1) formation of ozonide, (2) hydrolysis of ozonide.

Hydrolysis can be done with/without using reducing agent. Carboxylic acid/carbon dioxide/ketone is produced when hydrolysis is done without using reducing agent.

Here, 2,4,4-trimethyl-2-pentene yields mixture of $(CH_{3})_{2}C=O$ and $(CH_{3})_{3}CHO$

Reaction steps are shown below.

8 0

3 years ago