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weeeeeb [17]
3 years ago
5

The transfer of heat by the movement of heated fluid is called conduction. Please select the best answer from the choices provid

ed T F
Chemistry
2 answers:
ella [17]3 years ago
8 0
I would suppose it is false because conduction is the movement of heat between two objects that are in contact.
zimovet [89]3 years ago
8 0
False, that would be convection.
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A 2-kg block rests on a wall that is 3 m tall. What is the gravitational potential energy of the block? The force of gravity on
Keith_Richards [23]
PE= weight x height. (remember weight is the force of gravity acting on objects...NOT the same as mass)

PE=3*2*9.8
PE=6*9.8
PE=58.8 J (for joules which is the unit for both Kinetic and potential energy)

Hope this helps :D
7 0
3 years ago
1. If you have a sample of gas at a pressure of 16 atm, what will the pressure be if the volume is halved?
vagabundo [1.1K]

Answer:

1. The pressure will be 32 atm, twice the initial pressure.

2. The pressure will be 1.83 atm, one third of the initial pressure.

Explanation:

Boyle's law is one of the gas laws that relates the volume and pressure of a certain quantity of gas kept at a constant temperature.

This law says that "The volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure." This means that if the pressure increases, the volume decreases, while if the pressure decreases, the volume increases.

Boyle's law is expressed mathematically as:

Pressure * Volume = constant

or P * V = k

Ahora es posible suponer que tienes un cierto volumen de gas V1 que se encuentra a una presión P1 al comienzo del experimento. Si varias el volumen de gas hasta un nuevo valor V2, entonces la presión cambiará a P2, y se cumplirá:

P1*V1=P2*V2

1. In this case:

  • P1= 16 atm
  • V1
  • P2= ?
  • V2= V1÷2= \frac{V1}{2} because the volume is halved.

So:

16 atm*V1= P2* \frac{V1}{2}

Solving:

\frac{16 atm*V1*2}{V1}=P2

16 atm*2= P2

32 atm= P2

<u><em>The pressure will be 32 atm, twice the initial pressure.</em></u>

2. Now

  • P1= 5.5 atm
  • V1
  • P2= ?
  • V2= V1*3 because the volume is tripled.

So:

5.5 atm*V1= P2* V1*3

Solving:

\frac{5.5 atm*V1}{3*V1}=P2

\frac{5.5 atm}{3}= P2

1.83 atm= P2

<u><em>The pressure will be 1.83 atm, one third of the initial pressure.</em></u>

7 0
3 years ago
Calculate the number of atoms present in each following 2 mol fe
Nezavi [6.7K]
Hope this helps you.

7 0
3 years ago
Help me answer this chemistry question. thank you!
Vladimir79 [104]

Answer:

Chlorine and bromine

Explanation:

I think thats the answer in your question

8 0
3 years ago
Which of the following statements explains which trial has a lower concentration of the reactant? (5 points) Trial 1, because th
PIT_PIT [208]

Answer:

A)Trial 1 because the average rate of reaction is lower.

Explanation:

I accidentally gave myself low rating my bad

5 0
3 years ago
Read 2 more answers
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