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
PtichkaEL [24]
3 years ago
5

What did J.J. Thomson’s experiments with cathode ray tubes imply about the mass of an electron?

Chemistry
1 answer:
hoa [83]3 years ago
3 0
Correct answer:
C). Electrons are many thousand times smaller than the nucleus and negatively charged.

J.J Thomson in his first experiment with cathode ray tube discovered that cathode rays and the charge that was deposited are intrinsically linked together.

In his second experiment, he discovered that the charge in the cathode ray tube was negative. And from that, he deduces that cathode rays are made of negatively charged particles.
You might be interested in
The energy available to primary consumers in an energy pyramid is 800 kilocalories. Approximately how much energy is used by the
ki77a [65]
The answer is B, Let me know if you get it right!
5 0
3 years ago
Read 2 more answers
15 mL of acid 2 M was added to 20 mL of base 2 M into a calorimeter at room temperature (24 oC). The reaction mixture reached a
erik [133]

Answer:

here:

Explanation:

The changes in temperature caused by a reaction, combined with the values of the specific heat and the mass of the reacting system, makes it possible to determine the heat of reaction.

Heat energy can be measured by observing how the temperature of a known mass of water (or other substance) changes when heat is added or removed. This is basically how most heats of reaction are determined. The reaction is carried out in some insulated container, where the heat absorbed or evolved by the reaction causes the temperature of the contents to change. This temperature change is measured and the amount of heat that caused the change is calculated by multiplying the temperature change by the heat capacity of the system.

The apparatus used to measure the temperature change for a reacting system is called a calorimeter (that is, a calorie meter). The science of using such a device and the data obtained with it is called calorimetry. The design of a calorimeter is not standard and different calorimeters are used for the amount of precision required. One very simple design used in many general chemistry labs is the styrofoam "coffee cup" calorimeter, which usually consists of two nested styrofoam cups.

When a reaction occurs at constant pressure inside a Styrofoam coffee-cup calorimeter, the enthalpy change involves heat, and little heat is lost to the lab (or gained from it). If the reaction evolves heat, for example, very nearly all of it stays inside the calorimeter, the amount of heat absorbed or evolved by the reaction is calculated.

8 0
3 years ago
The tiara worn by Kate Middleton for her wedding to Prince William of England contains 888 diamonds and belongs to the British m
allsm [11]

Answer:

The number of atoms in the gemstones of that tiara is 8.9125\times 10^{24} atoms.

Explanation:

Number of diamonds ion tiara = 888

Mass of  each diamond = 1.0 carat = 0.200 g (given)

Mass of 888 diamonds in tiara:

888\times 0.200 g=177.600 g

Given that diamond is a form of carbon.

Atomic mass of  carbon atom = 12 g/mol

Moles of 77.600 g of carbon =\frac{177.600 g}{12 g/mol}=14.800 mol

Number of atoms of carbon 14.800 moles:

14.800 mol\times 6.022\times 10^{23} atoms =8.9125\times 10^{24} atoms

The number of atoms in the gemstones of that tiara is 8.9125\times 10^{24} atoms.

5 0
3 years ago
Is metal rusting a chemical reaction? Yes or no
mars1129 [50]

Answer: Yes it is. Rust would be considered a chemical reaction because it changes the chemical makeup of the metal.

Explanation:

5 0
3 years ago
Read 2 more answers
Anything i could add guys?
vampirchik [111]

Answer:ur needed to gorw up

Explanation:seroiuslsitlty

Ya such me yaar

4 0
2 years ago
Other questions:
  • what would happen to temperatures on Earth if the sun's heat were not distributed throughout the atmosphere
    5·1 answer
  • A hypothetical element has an atomic weight of 48.68 amu. It consists of three isotopes having masses of 47.00 amu, 48.00 amu, a
    11·2 answers
  • Gently boiling water had the ____ temperature as rapidly boiling water. <br><br> What is the blank?
    13·1 answer
  • Magnesium bromide is prepared in a laboratory using the reaction below. Typically, the magnesium bromide is recoveted as a solid
    5·1 answer
  • Consider the reaction and the rate law below.
    10·1 answer
  •  सानिमा  नौतला भएको  हरघडी  ​
    10·1 answer
  • The energy on the earth
    8·1 answer
  • Problem: Janna, a student of a chemistry class, told her friend that she learnt in class that bottled water is not pure. Kim, he
    5·1 answer
  • On a periodic table, the columns of elements with similar properties are:.
    14·1 answer
  • so like what if i go in my garage and start my car and rev the engine with all doors closed what would happen
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!