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Tcecarenko [31]
3 years ago
13

What subatomic particle has a negative charge and maintains an orbital cloud around the nucleus of the atom?

Chemistry
1 answer:
Anastaziya [24]3 years ago
7 0

Answer:

Electron

Explanation:

The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.

Symbol= e⁻

Mass= 9.10938356×10⁻³¹ Kg

It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.

While neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.

Symbol of proton= P⁺

Symbol of neutron= n⁰

Mass of proton=1.672623×10⁻²⁷Kg

Mass of neutron=1.674929×10⁻²⁷Kg

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.  All these three subatomic particles construct an atom.

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Veronika [31]

Answer:

Option A = 2.2 L

Explanation:

Given data:

volume of one mole of gas = 22.4 L

Volume of 0.1 mole of gas at same condition = ?

Solution:

It is known that one mole of gas at STP occupy 22.4 L volume. The standard temperature is 273.15 K and standard pressure is 1 atm.

For 0.1 mole of methane.

0.1/1 × 22.4 = 2.24 L

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6 0
3 years ago
Could you guys help me with these questions pls. Thank you
lapo4ka [179]

Answer:

8.4) 27.1 cm³

8.5) 0.217 mol/dm³

Explanation:

Please see attached picture for full solution.

8.4) Since the results from titrations 3-5 are within 0.10cm³ from each other, these 3 results are concordant.

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3 0
3 years ago
In the experiment, you added water to the reaction vessel after the reaction was complete, but we did not discuss why. Based on
chubhunter [2.5K]

Answer:

A.

Explanation:

Water was added to the reaction after the completion of the reaction so as to lower the solubility if the product in the solution therefore, the product can be precipitated out. On adding water the reaction moves in forward direction and more product is formed. (By Le Chatelier's principle). Thus, the precipitation occurs. Hence, option A is correct.

5 0
4 years ago
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padilas [110]

Answer:

Explanation:

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1)  CH₃ -CH(CH₃)-CH(NO₂)-CH₃

2 ) CH₃ -(CH₂)-CH(NO₂)-CH₂-CH₃

3 )  CH₃ -CH₂-CH₂-CH₂-CH₂-NO₂

4 ) CH₃ -CH₂-CH₂-CH(NO₂)-CH₃

5 )CH₃ -CH(CH₃)(NO₂)-CH₂-CH₃

6 ) CH₃ -CH(CH₃)-CH₂-CH₂-NO₂

7)CH₃ -CH₂-CH₂-CH(CH₃)-NO₂

CH₃-C(CH₃)₂-NO₂

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7 0
4 years ago
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