1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MrMuchimi
3 years ago
13

Calculate the work energy, w, gained or lost by the system when a gas expands from 15 l to 35 l against a constant external pres

sure of 1.5 atm

Physics
2 answers:
Irina-Kira [14]3 years ago
5 0

The work done by the gas is about 30 L.atm

\texttt{ }

<h3>Further explanation</h3>

The Ideal Gas Law and Work formula that needs to be recalled is:

\boxed {PV = nRT}

\boxed { W = P \Delta V }

<em>where:</em>

<em>W = Work ( J )</em>

<em>P = Pressure ( Pa )</em>

<em>V = Volume ( m³ )</em>

<em>n = number of moles ( moles )</em>

<em>R = Gas Constant ( 8.314 J/mol K )</em>

<em>T = Absolute Temperature ( K )</em>

Let us now tackle the problem !

\texttt{ }

<u>Given:</u>

initial volume = Vo = 15 L

final volume = V = 35 L

constant pressure = P = 1.5 atm

<u>Asked:</u>

word done by the gas = W = ?

<u>Solution:</u>

W = P \Delta V

W = P \times ( V - Vo )

W = 1.5 \times ( 35 - 15 )

W = 1.5 \times 20

W = 30 \texttt{ L.atm }

\texttt{ }

<h3>Conclusion:</h3>

The work done by the gas is about 30 L.atm

\texttt{ }

<h3>Learn more</h3>
  • Minimum Coefficient of Static Friction : brainly.com/question/5884009
  • The Pressure In A Sealed Plastic Container : brainly.com/question/10209135
  • Effect of Earth’s Gravity on Objects : brainly.com/question/8844454

\texttt{ }

<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Pressure

AnnyKZ [126]3 years ago
4 0
In physical chemistry or in thermodynamics, the work done on the system or by the system (depending on the sign convention) can be determined in several ways. When assumptions like ideal gas behavior is applied, then the formula for work is

W = Δ(PV)

which is the change of the product of Pressure and Volume. But since it was specified that Pressure is constant, the work could be simplified into

W = PΔV = P(V₂ - V₁)

Since we already know the constant pressure and the volumes of the ideal gas before and after the change, we could now solve for work. But let's establish first the units of work which is in Joules. When simplified, Joules is equal to m³*Pa. So, we first change the unit of pressure from atm to Pascals ( 1 atm = 101,325 Pa) and the unit of volume from liters to m³ (1 m³ = 1000 L),

1.5 atm * 101325 Pa/1 atm = 151987.5 Pa
15 L * 1 m³/1000 L = 0.015 m³
35 L * 1 m³/1000 L = 0.035 m³

Then, they are now ready for substitution,

W = 151987.5 Pa (0.035 m³ - 0.015 m³)
W = 3,039.75 Joules
You might be interested in
Represent 7468 N with SI units having an appropriate prefix. Express your answer to four significant figures and include the app
Musya8 [376]

Answer:

7.468 kN

Explanation:

Here the force is given in Newton

Some of the prefixes of the SI units are

kilo = 10³

Mega = 10⁶

Giga = 10⁹

Tera = 10¹²

The number is 7468.0

Here, the only solution where the number of significant figures is kilo. If any other prefix is chosen then the significant figures will increase.

1 kilonewton = 1000 Newton

1\ Newton=\frac{1}{1000}\ kilonewton

\\\Rightarrow 7468\ Newton=\frac{7468}{1000}\ kilonewton\\ =7.468\ kilonewton

So, 7468 N = 7.468 kN

7 0
3 years ago
How does increasing the distance between charged objects affect the electric force between them? the electric force increases be
konstantin123 [22]

the electric force decreases because the distance has an indirect relationship to the force

Explanation:

The electric force between two objects is given by

F=k \frac{q_1 q_2}{r^2}

where

k is the Coulomb's constant

q1 and q2 are the charges of the two objects

r is the distance between the two objects

As we can see from the formula, the magnitude of the force is inversely proportional to the square of the distance: so, when the distance between the object increases, the magnitude of the force decreases.

3 0
3 years ago
Read 2 more answers
Help me on question 5
Sveta_85 [38]
I believe it is acceleration!
6 0
3 years ago
Read 2 more answers
A particle starts from rest and has an acceleration function 5 − 10t m/s2 . (a) What is the velocity function? (b) What is the p
frez [133]

Explanation:

It is given that,

A particle starts from rest and has an acceleration function as :

a(t)=(5-10t)\ m/s^2

(a) Since, a=\dfrac{dv}{dt}

v = velocity

dv=a.dt

v=\int(a.dt)

v=\int(5-10t)(dt)

v=5t-\dfrac{10t^2}{2}=5t-5t^2

(b) v=\dfrac{dx}{dt}

x = position

x=\int v.dt

x=\int (5t-5t^2)dt

x=\dfrac{5}{2}t^2-\dfrac{5}{3}t^3

(c) Velocity function is given by :

v=5t-5t^2

5t-5t^2=0

t = 1 seconds

So, at t = 1 second the velocity of the particle is zero.

7 0
2 years ago
Monochromatic light with a wavelength of 600 nanometers (one nanometer is 10-9 meters) is incident upon a double slit arrangemen
AnnyKZ [126]
I think it should be 6,000
7 0
2 years ago
Other questions:
  • 1. Rocks change as a result of what?
    12·2 answers
  • ou are unloading a refrigerator from a delivery van. The ramp on the van is 5.0 m long, and its top end is 1.4 m above the groun
    9·1 answer
  • Where do consumers get their nitrogen from?
    12·1 answer
  • A laser beam is incident at an angle of 30.2° to the vertical onto a solution of corn syrup in water. (a) If the beam is refract
    8·1 answer
  • The photons of different light waves:
    6·1 answer
  • If the period of a given wave is 6 seconds, what is the frequency of the wave?
    7·1 answer
  • Select the correct answer.
    15·2 answers
  • ¿Qué dice el principio de conservación de la energía?
    5·1 answer
  • How to calculate this operation? m=10kg and L=2500J/kg? What is the Energy?
    5·1 answer
  • A rollercoaster accelerates from 10 m/s to 100 m/s2 for 25 seconds. What is the acceleration?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!