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Nezavi [6.7K]
2 years ago
11

What mechanical waves needs a medium to travel through?

Chemistry
2 answers:
Paul [167]2 years ago
6 0

Answer: A. All mechanical waves needs a medium to travel through.

Explanation:

Mechanical waves are waves that require a medium to propagate their energy. Examples of mechanical waves include : Transverse wave, Longitudinal wave and Surface wave.

ValentinkaMS [17]2 years ago
5 0
A) all mechanical waves need a medium to travel through.
This is true because mechanical waves move in a wave like manner at the atomic level. This is why an table vibrates when you put a speaker on top of it .
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What are some of the structures inside a cell that help it to live and perform its role in an organism.
Blababa [14]

Answer:

Cells have many structures inside them called organelles. These organelles are like organs in a human that help a organism survive. Mitochondria are the power House of the cell and provide energy for the cell.

4 0
3 years ago
Given a fixed amount of gas in a rigid container (no change in volume), what pressure will the gas exert if the pressure is init
Masja [62]

Answer:

The pressure the gas will have if the pressure is initially 1.50 atm at 22.0 ° C and the temperature changes at 11.0 ° C is 1.44 atm (option D)

Explanation:

Gay Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move more rapidly. Then the number of collisions against the walls increases, that is, the pressure increases. That is, the gas pressure is directly proportional to its temperature.

Gay-Lussac's law can be expressed mathematically as follows:

\frac{P}{T}=k

Where P = pressure, T = temperature, K = Constant

You have a gas that is at a pressure P1 and at a temperature T1. When the temperature varies to a new T2 value, then the pressure will change to P2, and then:

\frac{P1}{T1}=\frac{P2}{T2}

In this case:

  • P1= 1.50 atm
  • T1= 22 °C= 295 °K (being 0°C= 273 °K)
  • P2= ?
  • T2= 11 °C= 284 K

Replacing:

\frac{1.5 atm}{295 K}=\frac{P2}{284 K}

Solving:

P2= 284 K*\frac{1.5 atm}{295 K}

P2=1.44 atm

<u><em>The pressure the gas will have if the pressure is initially 1.50 atm at 22.0 ° C and the temperature changes at 11.0 ° C is 1.44 atm (option D)</em></u>

8 0
2 years ago
The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing the rock in a cylinder with
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The concept of water by displacement. D=m/v therefore m=15.5 g and volume=5 mL (final - initial) then calculate the density
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3 years ago
Select the most likely product for this reaction: upper a g upper n upper o subscript 3 (a q) plus upper n a upper o upper h (a
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One of the most likely products for the reaction would be Ag_2O

<h3>Chemical reactions</h3>

The reaction between AgNO_3 and NaOH yields 3 products which are Ag_2O (a precipitate), NaNO_3, and H_2O as shown by the equation below:

2 AgNO_3 + 2 NaOH --- > Ag_2O + 2 NaNO_3 + H_2O

One of the products precipitates out of the solution to give the reaction a precipitation reaction look.

More on precipitation reaction can be found here: brainly.com/question/24158764

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5 0
2 years ago
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1. Describe what an irreversible change is.
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Answer:

A change is called irreversible if it cannot be changed back again. In an irreversible change, new materials are always formed.

Explanation:

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2 years ago
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