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
Ganezh [65]
3 years ago
14

A sample of n2 gas occupies a volume of 746 ml at stp. What volume would n2 gas occupy at 155 ◦c at a pressure of 368 torr?

Physics
1 answer:
musickatia [10]3 years ago
7 0

Answer:

2.41 L

Explanation:

We can solve the problem by using the ideal gas equation, which can be rewritten as:

\frac{p_1 V_1}{T_1}=\frac{p_2 V_2}{T_2}

where we have:

p_1 = 1.01\cdot 10^5 Pa (initial pressure is stp pressure)

V_1 = 746 mL = 0.746 L = 7.46\cdot 10^{-4}m^3 is the initial volume

T_1 = 0^{\circ}=273 K is the initial temperature (stp temperature)

p_2 = 368 torr = 4.9\cdot 10^4 Pa is the final pressure

V_2 = ? is the final volume

T=155^{\circ}=428 K is the final temperature

By substituting the numbers inside the formula and solving for V2, we find the final volume:

V_2 = \frac{p_1 V_1 T_2}{T_1 p_2}=\frac{(1.01\cdot 10^5 Pa)(7.46\cdot 10^{-4} m^3)(428 K)}{(273 K)(4.9\cdot 10^4 Pa)}=2.41\cdot 10^{-3} m^3

which corresponds to 2.41 L.

You might be interested in
A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly
ivanzaharov [21]

Answer:

Question 1

The velocity of the hare 2.2 s after it starts is 1.76 m/s

Question 2

15.1 s after the hare starts, its velocity is 3.53 m/s

Question 3

The hare travels 55.49 m before it begins to slow down.

Question 4

Once it begins to slow down, the acceleration of the hare is -1.13 m/s²

Question 5

The total time the hare is moving is 21.02 s.

Question 6

The acceleration of the tortoise is 0.28 m/s².

Explanation:

These kinematic equations apply for the hare:

for the first 4.4 seconds:

v = v0 + at

x = x0 + v0t + 1/2at²

where:

v = velocity

v0 = initial velocity

a = acceleration

t = time

x = position

x0 = initial position

from 4.4 s to 17.9 s (+13.5 s)

v = constant.

the velocity is the same as the final velocity in the first 4.4 s of the race:

v = v0 + a*4.4s

x = x0 + vt

from 17.9 s until end:

v = v0 +at

x = x0 + v0t +1/2at²

Question 1

2.2 s after the start the hare is accelerating (0.8 m/s²).

from the equation:

v = v0 +at

replacing with the data:

v = 0 m/s + 0.8 m/s² * 2.2 s = 1.76 m/s

Question 2

At 15.1 s the hare is running at constant speed. It will be the final speed reached during the first 4.4 s:

v = v0 + a*4.4s

replacing with the data:

v= 0 m/s + 0.8 m/s² * 4.4s = 3.52 m/s

Question 3

We have to find the position at time 17.9 s.

For the first 4.4 s the hare runs:

x = x0 + v0t +1/2at² = 0m + 0 m/s * 4.4 s + 1/2 * 0.8 m/s² * (4.4 s)² = 7.7 m

For the next 13.5 s, the hare runs:

x = x0 + vt

where v=v0 + a*4.4s (the final velocity of the first 4.4 s)

v = 0 m/s + 0.8 m/s² * 4.4 s = 3.52 m/s

and x0 = 7.7 m (the final position of the first sprint)

Then:

x = 7.7m + 3.54 m/s * 13.5 s = 55.49 m

Question 4

The equation of position in this part of the race is:

x = x0 + v0t +1/2at²

where

x0 is the position calculated in question 3.

v0 is the final speed of the first 4.4 s calculated in question 2.

The velocity of the hare is 0 at position x = 61 m, then:

v = v0 +at

0 = v0 +at (at x = 61 m)

-v0 = at

a = -v0/t

then replacing a = -v0/t in the equation of position and solving for t:

x = x0 + v0t + 1/2(-v0/t)*t²

x = x0 + v0t -1/2v0t

x = x0 + 1/2v0t

x - x0 / (1/2v0) = t

replacing with the data:

61 m -55.49 m / 1/2* 3.53 m/s = 3.12 s

The acceleration is then:

a = -v0/t

a = -3.53 m/s / 3.12 s = -1.13 m/s²

Question 5

The hare moves for 4.4 s accelerating, for 13.5 s at a constant speed and for 3.12 s (see question 4) slowing down.

The total time is: 4.4s + 13.5 s + 3.12 s = 21.02 s

Question 6

The tortoise runs 61.0 meters in 21.02 s (the tortoise catches the hare just when it comes to stop). The equation for the position can be written as:

x = x0 +v0t +1/2at²

x0 = 0 and v0 = 0 since the tortoise starts from rest. Then, solving for a:

2x / t² = a

replacing with the data:

2*61 m / (21.02 s)² = a

a = 0.28 m/s²

"Slow and steady wins the race"

5 0
3 years ago
A fugitive tries to hop on a freight train traveling at a constant speed of 5.0 m/s. Just as an empty box car passes him, the fu
zhuklara [117]
Let d =  distance that the fugitive travels to get on the train.

Let t =  the time to travel the distance d.
The fugitive starts from rest accelerates at a = 3.8 m/s².
Therefore
(1/2)*(3.8 m/s²)*(t s)² = (d m)
1.9 t² = d                      (1)

The train travels at constant speed  5.0 m/s.
Therefore
(5.0 m/s)*(t s) = d    
5t = d                          (2)

If the fugitive successfully boards the train, then equate (1) and (2).
1.9t² = 5t
t = 0 or t = 2.6316 s
Ignore t = 0, so t = 2.6316 s.

The speed of the fugitive after 2.6316 s, is
v = (3.8 m/s²)*(2.6316 s) = 10 s

This speed exceeds the maximum speed of the fugitive, therefore the fugitive fails to get on the train.

Answer: The fugitive fails to get on the train.
8 0
3 years ago
Read 2 more answers
An atom has 35 protons. what element is it?
zvonat [6]

The element that has 35 protons is Bromine

4 0
3 years ago
Read 2 more answers
What is being despited in this picture
yan [13]

Answer:

i am guessing for reflection but not so sure

8 0
3 years ago
What does the term conserved mean?
Morgarella [4.7K]
There’s many terms to it

1 : to keep in a safe or sound state He conserved his inheritance. especially : to avoid wasteful or destructive use of conserve natural resources conserve our wildlife. 2 : to preserve with sugar. 3 : to maintain (a quantity) constant during a process of chemical, physical, or evolutionary change conserved DNA ...
4 0
2 years ago
Other questions:
  • In the figure below, a long circular pipe with outside radius R = 2.57 cm carries a (uniformly distributed) current i = 10.4 mA
    12·2 answers
  • You have developed a method in which a paint shaker is used to measure the coefficient of static friction between various object
    7·1 answer
  • Using Figure 25-2, determine how Giant stars differ from main sequence stars.
    14·2 answers
  • Rounded to the nearest whole number, how many electrons are in an atom of zirconium? 40 51 91 131
    8·2 answers
  • Two particles, with identical positive charges and a separation of 2.85 x 10⁻² m, are released from rest. Immediately after the
    6·1 answer
  • A car has a mass of 1200kg what is it’s acceleration when the engine exerts a force of 600 n
    11·1 answer
  • A scientific theory is an idea supported by research that attempts to explain existing observations or predict new ones. true or
    7·1 answer
  • Which of the following emissions is associated with burning coal? a. sulfur dioxide b. carbon dioxide c. nitrous oxides d. all o
    12·1 answer
  • According to the kenitic theory, what happens when ice melts
    12·2 answers
  • why do this I'm trying to cheat and you put a question omgggggggggggggggggggggg!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!