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Nimfa-mama [501]
3 years ago
5

Which of the following descriptions properly describes the electrons?

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

Answer:

Which following? If you could please be more specific I would gladely love to answer your question. (:

vivado [14]3 years ago
5 0

<u>Answer:</u>

J J. Thomson discovered electron by performing his cathode ray tube experiment also called as discharge tube experiment.

<u>Properties : </u>

1. Electrons are negatively charged particles.

2. The mass of an electron is = 9.109\times10^{-31} Kg

3. The particles travel in a straight line.

4. They are attracted to the magnet.

5. Electrons exhibit dual nature that is it has both particle and wave nature.

6. The antiparticle of an electron is called as a Positron which has a positive charge.

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Why is water essential to living things? (1 pc
DIA [1.3K]

Answer:

Living organisms need water to survive. Many scientists even believe that if any extra-terrestrial exists, water must be present in their environments. All oxygen-dependent organisms need water to aid in the respiration process. Some organisms, such as fish, can only breathe in water. Other organisms require water to break down food molecules or generate energy during the respiration process. Water also helps many organisms regulate metabolism and dissolves compounds going into or out of the body.

Explanation:

6 0
3 years ago
A boy swings a rubber ball attached to a string over his head in a horizontal, circular path. The piece of string is 1.15 m long
gregori [183]

Answer:

v = 16.49 m/s

Explanation:

Given that,

Length of the string, l = 1.15 m

The ball makes 137 complete turns each minute.

We know that, 1 turn = 6.28 rad

137 turns = 860.79 rad

1 min = 60 s

\omega=\dfrac{860.79\ rad}{60\ s}\\\\=14.34\ rad/s

We need to find the tangential velocity of the ball. It can be given by

v=r\omega\\\\=1.15\times 14.34\\\\v=16.49\ m/s

So, the tangential velocity of the ball is 16.49 m/s.

5 0
3 years ago
A women steps in front of a child to keep him from running off which term best describes this example
valina [46]
Negative force

The woman is applying force to stop the child or to prevent him from running.

I hope this helps...
4 0
3 years ago
The reaction C4H8(g)⟶2C2H4(g) C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol.262 kJ/mol. At 600.0 K,600.0 K, the rate c
crimeas [40]

Answer : The rate constant at 785.0 K is, 1.45\times 10^{-2}s^{-1}

Explanation :

According to the Arrhenius equation,

K=A\times e^{\frac{-Ea}{RT}}

or,

\log (\frac{K_2}{K_1})=\frac{Ea}{2.303\times R}[\frac{1}{T_1}-\frac{1}{T_2}]

where,

K_1 = rate constant at 600.0K = 6.1\times 10^{-8}s^{-1}

K_2 = rate constant at 785.0K = ?

Ea = activation energy for the reaction = 262 kJ/mole = 262000 J/mole

R = gas constant = 8.314 J/mole.K

T_1 = initial temperature = 600.0K

T_2 = final temperature = 785.0K

Now put all the given values in this formula, we get:

\log (\frac{K_2}{6.1\times 10^{-8}s^{-1}})=\frac{262000J/mole}{2.303\times 8.314J/mole.K}[\frac{1}{600.0K}-\frac{1}{785.0K}]

K_2=1.45\times 10^{-2}s^{-1}

Therefore, the rate constant at 785.0 K is, 1.45\times 10^{-2}s^{-1}

7 0
4 years ago
What is the valency of Aluminium and nitrate in Al(NO3)3 ?​
Kitty [74]

Answer:xl/ck xLKsx

Explanation:sl/cs c/ls

3 0
3 years ago
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