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
Alex Ar [27]
4 years ago
15

Which of the following observations indicates that atoms of all elements contain small, negatively charged particles? Alpha part

icles are repelled by cathode rays of elements. Cathode rays are deflected towards a positively charged rod. A particular frequency of light is produced by a gas in an excited state. Certain areas of the atom called orbitals contain all the charged particles.
Chemistry
2 answers:
Marizza181 [45]4 years ago
8 0

Answer:

The correct option is;

Cathode rays are deflected towards a positively charged rod

Explanation:

Cathode rays are  beam of electrons emitted from the cathode in a vacuum tube and moving towards the anode, due to the difference in the voltage between the electrodes

The discovery of the electrons was through the proof by Thomson that cathode rays were a negatively charged, previously unknown particle, which was to become known as the electron.

lianna [129]4 years ago
6 0

Answer: Cathode rays are deflected towards a positively charged rod

Explanation:

You might be interested in
Convert the pressure 525.4 torr to kPa.
Oduvanchick [21]

Answer:

Option A. 70.0 KPa.

Explanation:

Data obtained from the question include:

Pressure (torr) = 525.4 torr

Pressure (kPa) =?

The pressure expressed in torr can be converted kPa as shown below:

760 torr = 101.325 KPa

Therefore,

525.4 torr = (525.4 x 101.325) / 760 = 70.0 KPa.

Therefore, 525.4 torr is equivalent to 70.0 KPa.

3 0
3 years ago
Read 2 more answers
When substances go through chemical changes, which of the following will always happen? A. Exactly one new substance will form a
tiny-mole [99]
I think b is the answer 
4 0
4 years ago
Read 2 more answers
the speed limit is posted as 35 km/hr . your speedometer reads that you are going 40 miles/hr. are you speeding?
Morgarella [4.7K]
No, because 40 miles is the same as nearly 25 km/h. 
4 0
3 years ago
Under a certain set of conditions, the percent yield of a reaction that produces carbon dioxide is 75.0%. What mass in grams of
ExtremeBDS [4]

Answer:

Actual yield = 20.03g

Explanation:

% yield = 100.\frac{actual yield}{theoretical yield}% yield = 100. \frac{actual \ yield}{theoretical \ yield}

Actual yield = % yield.(theoretical yield) / 100

Actual yield = 75.26.7/100

Actual yield = 20.025

6 0
3 years ago
Read 2 more answers
Which characteristics are common to the three isotopes of hydrogen?
allsm [11]
D should be the correct answer.  isotopes are atoms that have the same atomic number (number of protons) but different atomic masses (number of protons and neutrons).  isotopes also have the same number of electrons since atoms need to have equal numbers of protons and electrons to not be considered ions.  Since the number of protons determines the chemical properties of the atom, we can say that all isotopes have the same chemical properties due to the fact that all isotopes have the same atomic number.

I hope this helps.  Let me know in the comments if anything is unclear.
8 0
3 years ago
Other questions:
  • Draw the products formed when cholesterol is treated with [1] bh3·thf; [2] h2o2, −oh. indicate the stereochemistry around any st
    9·1 answer
  • What do transition metals have in common
    8·1 answer
  • How do you express 0.00026 in scientific notation
    12·2 answers
  • Calculate the mass in atomic mass units of 0.25 mol of carbon-12 atoms
    7·2 answers
  • You want to make 100 mL of a 2.5 M stock solution of calcium chloride (molecular weight 110.98 g/mol). How many grams of calcium
    14·1 answer
  • A group of students used the instructions below to make a model of a watershed. When water washes over the water-soluble ink, th
    5·1 answer
  • The electronic arrangement of an atom shows how electrons are distributed across the different energy levels. Which of the follo
    6·1 answer
  • Seleccion Multiples- Utilizando la siguiente clave, Identifica cada tipo de reacción química, escogiendo
    9·1 answer
  • How many moles is 1.8 x 1023 atoms of Be?
    11·1 answer
  • Iron metal can be obtained from iron ore, iron (III) oxide. When the iron (III) oxide is reacted with carbon monoxide gas it for
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!