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
Naddika [18.5K]
3 years ago
8

Filling Air Bags Automobile air bags produce nitrogen gas from the reaction:

Chemistry
1 answer:
Alja [10]3 years ago
8 0

(a) The work done by the nitrogen against external pressure is 126.66 J.

(b) The change in the internal energy of the system is -2,466.66 J.

The given parameters:

  • <em>Mass of the compound, = 2.25 g</em>
  • <em>External pressure, P = 1.0 atm = 101325 Pa</em>
  • <em>Density of Nitrogen gas, ρ = 1.165 g/L</em>
  • <em>Temperature of the Nitrogen gas, T = 20⁰C</em>

<em />

The molar mass of the given compound is calculated as follows;

NaN₃ = 23+ (14 x 3) = 65 g/mol

65 g -------------- 42

2.25 g ------------- ?

= \frac{2.25 \times 42}{65} \\\\= 1.45 \ g

The volume of the nitrogen gas is calculated as follows;

\rho = \frac{m}{V} \\\\V = \frac{m}{\rho} \\\\V = \frac{1.45}{1.165} \\\\V = 1.25 \ L

V = 0.00125 \ m^3

The work done by the nitrogen against external pressure is calculated as follows;

W = PV\\\\W = 101325 \times 0.00125\\\\W = 126.66 \ J

The change in the internal energy of the system is calculated by applying first law of thermodynamics as follows;

\Delta E = Q - W\\\\\Delta E = (-2,340) - (126.66)\\\\\Delta E = -2,466.66 \ J

Learn more about first law of thermodynamics here: brainly.com/question/2965070

You might be interested in
When each piece of ice is placed on a piece of oil it is observed that ice piece 2 melts faster than ice plece 1
solniwko [45]

We cannot see it its so small

Also yes it matches your hypothesis

4 0
3 years ago
The refrigerator has no room to cool the meat you've just cooked you should
stealth61 [152]
If the refrigerator has no room to cool the meat that you've just cooked, then you should clear it with other stuff or food that has not been consumed for days. There might be some goods that are not good for consumption anymore even though it has been placed in the ref for a couple of days. Hope this answers your question.
7 0
3 years ago
Which statement best describes alpha decay?(1 point)
Veseljchak [2.6K]

Answer:

After the ejection of an alpha particle, the remaining nucleus has a mass number that is four less and an atomic number that is two less, so alpha decay is a type of nuclear fission.

6 0
2 years ago
Answer the question below. Use the rubric in the materials for help if needed.
earnstyle [38]

Answer:

..

...

....

Explanation:

hop it helps.....

8 0
3 years ago
Hey!<br> I need a simple connotation of how glowsticks glow.<br> Please and thank you.
LenaWriter [7]

Answer:

simple

Explanation:

The glow stick's outer plastic tube holds a solution of an oxalate ester and an electron-rich dye along with a glass vial filled with a hydrogen peroxide solution. ... Glow sticks light up when oxalate esters react with hydrogen peroxide to form a high-energy intermediate

5 0
2 years ago
Other questions:
  • E. Top soil is fertile reason​
    11·1 answer
  • When 1.045 g of CaO is added to 50.0 mL of water at 25.0 °C in a calorimeter, the temperature of the water increases to 32.3 °C.
    15·1 answer
  • Describe the nucleus of the atom. Include a description of its size relative to the rest of the atom.
    5·1 answer
  • A 2.0-liter aqueous solution contains a total of 3.0 moles of dissolved NH4Cl at 25°C and standard pressure.
    15·2 answers
  • Calculate the half-life (in s) of a first-order reaction if the concentration of the reactant is 0.0576 M 17.1 s after the react
    6·1 answer
  • Which of the following describes wind direction?
    10·2 answers
  • Damian mixed two samples together: a
    14·1 answer
  • Help me outttttttttttt t t t. T t
    6·1 answer
  • How many moles of copper are there in 6.93 g of copper sample<br>pls be quick​
    14·2 answers
  • The center on your school’s basketball team is 6 ft 10 in tall. How tall is the player in millimeters (mm)?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!