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
igomit [66]
3 years ago
9

A 29.1 liter tank contains ideal helium gas at 35.8°C and a pressure of 21.8 atm How many moles of gas are in the tank?

Physics
1 answer:
crimeas [40]3 years ago
3 0

Answer:

No. of moles, n = 25.022 moles

Given:

Volume of gas in tank, V = 29.1 l

Temperate of gas, T = 35.8^{\circ} = 273 + 35.8 = 308.8 K

Pressure of gas, P = 21.8 atm

Solution:

Making use of the ideal gas equation which given as:

PV = nRT

where

R = Rydberg's constant = 0.0821 L-atm/mol-K

Re-arranging the above formula for 'n' and putting the values in the above formula:

n = \frac{PV}{RT}

n = \frac{21.8\times 29.1}{0.0821\times 308.8}

n = 25.022

You might be interested in
I need help on 2/3 please asap thx ♥️
ch4aika [34]

<u>questions 2</u>

F=m

therefore

a=F/m

a=408/68

=6m/s^2.

5 0
4 years ago
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. The athlete is able to rotate the ball at the
Andrei [34K]

Answer:

a) 2nd case rate of rotation gives the greater speed for the ball

b) 1534.98 m/s^2

c) 1515.04 m/s^2

Explanation:

(a) v = ωR

when R = 0.60, ω = 8.05×2π

v = 0.60×8.05×2π = 30.34 m/s

Now in 2nd case

when R = 0.90, ω = 6.53×2π

v = 0.90×6.53×2π = 36.92 m/s

6.35 rev/s gives greater speed for the ball.

(b) a = ω^2 R = (8.05×2π)^2 )(0.60) = 1534.98 m/s^2

(c) a = ω^2 R = (6.53×2π)^2 )(0.90) = 1515.05 m/s^2

7 0
3 years ago
Liam throws a water balloon horizontally at 8.2 m/s out of a window 18 m from the ground.
Alecsey [184]

Time taken by the water balloon to reach the bottom will be given as

h = \frac{1}{2} gt^2

here we know that

h = 18 m

g = 9.8 m/s^2

now by the above formula

18 = \frac{1}{2}*9.8* t^2

18 = 4.9 t^2

t = 1.92 s

now in the same time interval we can say the distance moved by it will be

d = v_x * t

d = 8.2 * 1.92 = 15.7 m

so it will fall at a distance 15.7 m from its initial position

5 0
3 years ago
a light-year is ____ A. the amount of time it takes light to get to the nearest star B. the distance light travels in a day C. t
Vinil7 [7]
The Answer is C. the distance light travels in a year
6 0
3 years ago
Read 2 more answers
A bicycle rider traveling east at 10 km/hr sees a blue car pass her appearing to travel west at 50 km/hr. What is the blue car's
BigorU [14]

Answer:

v_{bR} = 25 km/h towards west

Explanation:

As we know that the speed of the blue car as appear to the bicycle rider is given as

v_{bc} = 50 km/h towards west

also it is given that bicycle is moving at speed of 10 km/h towards East

so here we have

v_{bc} = v_b - v_c

so we have

v_b = v_{bc} + v_c

v_b = -50 + 10 = 40 km/h towards west

now speed of the red car is given as 15 km/h towards west

so here the relative speed of blue car with respect to red car is given as

v_{bR} = v_b - v_R

v_{bR} = 40 - 15 = 25 km/h towards west

8 0
4 years ago
Other questions:
  • What is the process by which water is transferred to the atmosphere by plants and trees called?
    15·2 answers
  • What is the current in the 10.0 , resistor?
    7·2 answers
  • 6. An unknown material has a normal melting/freezing point of 225.0 °C, and the liquid
    10·1 answer
  • A group of organisms that is able to interbreed is called a
    11·1 answer
  • A source vibrating at constant frequency generates a sinusoidal wave on a string under constant tension. If the power delivered
    9·1 answer
  • What is the final speed of an object that starts from rest and accelerates uniformly at 3.0 meters per second2 over a distance o
    8·1 answer
  • I’m in the middle of a test right now. If anybody knows this can they help
    5·1 answer
  • Need now
    14·2 answers
  • Pace left home at 8 AM to spend the day at an amusement park. He arrived at the park, which was 150 km from his house, at 10 AM.
    7·1 answer
  • A train is traveling at 30.0 m/sm/s relative to the ground in still air. The frequency of the note emitted by the train whistle
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!