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bekas [8.4K]
3 years ago
9

Which description best characterization the motion of particles in a solid

Chemistry
2 answers:
marta [7]3 years ago
4 0

Are there any choices? Because from what the question is it seems like we need choices to help

Trava [24]3 years ago
4 0

Answer:

D) Vibrating in fixed position

Explanation:

just took it on edge 2020

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Step 1: Pick your favorite physical activity This can be almost anything! Try to pick an activity that you like to participate i
lana66690 [7]

Dancing is a physical activity which strengthens the abdominal and calf muscles as well as improves flexibility.

<h3>What is a physical activity?</h3>

A physical activity is any activity which involves movement of the body in order to strengthen the muscles and to be physically fit.

Dancing is a physical activity which involves intricate and repeated movements of the body.

Dancing is beneficial because;

  • it helps to relieve stress
  • it improves flexibility
  • it builds muscle endurance

Some muscles involved in dancing include;

  • The abdominal muscles
  • The quadriceps
  • the glutes

Some risks in dancing include muscle injuries, dislocations and possibly fractures due to falls.

Therefore, a dancing routine strengthens the abdominal and calf muscles as well as improves flexibility.

Learn more about dancing at: brainly.com/question/19025917

8 0
2 years ago
B. The following reaction takes place in a basic solution. (7 points)
Natali5045456 [20]

<u>Answer:</u> The final equation has hydroxide ions which indicate that the reaction has occurred in a basic medium.

<u>Explanation:</u>

Redox reaction is defined as the reaction in which oxidation and reduction take place simultaneously.

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when the oxidation number of a species increases.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when the oxidation number of a species decreases.

The given redox reaction follows:

MnO_4^-(aq)+NO_2^-(aq)\rightarrow MnO_2(s)+NO_3^-(aq)

To balance the given redox reaction in basic medium, there are few steps to be followed:

  • Writing the given oxidation and reduction half-reactions for the given equation with the correct number of electrons

Oxidation half-reaction: NO_2^-+2OH^-\rightarrow NO_3^-+H_2O+2e^-

Reduction half-reaction: MnO_4^-+2H_2O+3e^-\rightarrow MnO_2+4OH^-

  • Multiply each half-reaction by the correct number in order to balance charges for the two half-reactions

Oxidation half-reaction: NO_2^-+2OH^-\rightarrow NO_3^-+H_2O+2e^-         ( × 3)

Reduction half-reaction: MnO_4^-+2H_2O+3e^-\rightarrow MnO_2+4OH^-             ( × 2)

The half-reactions now become:

Oxidation half-reaction: 3NO_2^-+6OH^-\rightarrow 3NO_3^-+3H_2O+6e^-

Reduction half-reaction: 2MnO_4^-+4H_2O+3e^-\rightarrow 2MnO_2+8OH^-

  • Add the equations and simplify to get a balanced equation

Overall redox reaction: 3NO_2^-+2MnO_4^-+H_2O\rightarrow 3NO_3^-+2MnO_2+2OH^-

As we can see that in the overall redox reaction, hydroxide ions are released in the solution. Thus, making it a basic solution

3 0
3 years ago
What kind of chemical reaction does the chemical equation sodium + chlorine → sodium chloride represent?
tresset_1 [31]
This would represent a synthesis reaction 
7 0
3 years ago
Read 2 more answers
What is not matter in chemistry?? ​
Igoryamba

Answer:

중요하지 않은 것들의 예로는 생각, 감정, 빛, 에너지가 있습니다. ... 에너지 : 빛, 열, 운동 및 위치 에너지, 소리는 질량이 없기 때문에 물질이 아닙니다. 사물

Explanation:

Energy: Light, heat, kinetic and potential energy, and sound are non-matter because they are massless. Objects that have mass and are matter may emit energy.

5 0
2 years ago
Read 2 more answers
Observe as equações e de acordo com Brönsted-Lowry, os compostos destacados são, respectivamente
Alex777 [14]

answer

j'ai besoin d'aide

=]

<3

7 0
2 years ago
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