1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
WINSTONCH [101]
3 years ago
14

Which best describes the effect of J. J. Thomson’s discovery?

Chemistry
2 answers:
Svet_ta [14]3 years ago
5 0

Answer is: the accepted model of the atom was changed.

J.J. Thomson placed two oppositely charged electric plates around the cathode ray. He did experiments using different metals as electrode materials and found that the properties of the cathode ray remained constant no matter what cathode material he used.

Tomson concluded that atoms are divisible and that the corpuscles are their building blocks (atoms are made up of smaller particles).  

J. J. Thomson discovered the electron in 1897.  

His "plum pudding" model (1904) suggested: the electrons are embedded in the positive charge.  

With this model, he abandoned his earlier hypothesis (the atom was composed of immaterial vortices).  

sergey [27]3 years ago
3 0

answer is A the accepted model of the atom was changed

You might be interested in
If moving objects have kinetic energy, do moving atoms kinetic energy?
podryga [215]

Answer:

yes, if they were in rest they would have potential energy

Explanation:

7 0
3 years ago
A sample of gas has a density of 0.53 g/L at 225 K and under a pressure of 108.8 kPa. Find the density of the gas at 345 K under
sukhopar [10]

Answer:

\rho _2=0.22g/L

Explanation:

Hello!

In this case, since we are considering an gas, which can be considered as idea, we can write the ideal gas equation in order to write it in terms of density rather than moles and volume:

PV=nRT\\\\PV=\frac{m}{MM} RT\\\\P*MM=\frac{m}{V} RT\\\\P*MM=\rho RT

Whereas MM is the molar mass of the gas. Now, since we can identify the initial and final states, we can cancel out R and MM since they remain the same:

\frac{P_1*MM}{P_2*MM} =\frac{\rho _1RT_1}{\rho _2RT_2} \\\\\frac{P_1}{P_2} =\frac{\rho _1T_1}{\rho _2T_2}

It means we can compute the final density as shown below:

\rho _2=\frac{\rho _1T_1P_2}{P_1T_2}

Now, we plug in to obtain:

\rho _2=\frac{0.53g/L*225K*68.3kPa}{345K*108.8kPa}\\\\\rho _2=0.22g/L

Regards!

8 0
3 years ago
The element nickel has the following properties. Select the two that are chemical properties of nickel.
kkurt [141]
<span>a. It melts at 1455oC I know this is correct I need One more</span>
5 0
4 years ago
How is hydrogen in heavy water different from hydrogen in normal water?
tatyana61 [14]

Answer:

I'd say the correct answer is A

Explanation:

hope this helps:)

sorry if its wrong:(

6 0
3 years ago
What is the volume of 55 grams of carbon dioxide at STP
e-lub [12.9K]

Answer:

A. 2.45 L - Answer my answers is right.

7 0
3 years ago
Other questions:
  • Which process contributes to the formation of tornados?
    9·2 answers
  • Jonathan claims that since only humans can read, it must be an inherited trait, passed from human parents to their children. Is
    5·1 answer
  • F2 is light yellow/colorless in hydrocarbon solvent. I2 is pink. If a student combines fluorine water with NaI (sodium iodide) i
    15·1 answer
  • Americium-241 is a radioactive substance used in smoke detectors. The half life of americium is 432 years. If a smoke detector i
    14·1 answer
  • Researchers want to determine the best temperatures for storing batteries. Describe a possible experiment and list the variables
    6·1 answer
  • Consider the balanced equation below. 4NH3 + 3O2 2N2 + 6H2O What is the mole ratio of NH3 to N2?
    13·2 answers
  • A rigid plastic container holds 1.00 l methane gas at 660 torr pressure when the temperature is 22.0 degrees Celsius. How much p
    9·2 answers
  • This element was named for the scientist who discovered the nucleus of the atom using gold foil
    5·2 answers
  • Three chemical reactions of ethane?
    9·1 answer
  • How might someone dispute the results of your investigation? How might you counter the argument?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!