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
Stella [2.4K]
3 years ago
14

Select the correct answer.

Chemistry
1 answer:
Scilla [17]3 years ago
5 0

Answer:

I think it Might Be C

Explanation:

I'm Not sure

You might be interested in
A closed, frictionless piston-cylinder contains a gas mixture with the following composition on a mass basis: 40% carbon dioxide
Hitman42 [59]

Answer:

W=-37.6kJ, therefore, work is done on the system.

Explanation:

Hello,

In this case, the first step is to compute the moles of each gas present in the given mixture, by using the total mixture weight the mass compositions and their molar masses:

n_{CO_2}=0.8kg*0.4*\frac{1kmolCO_2}{44kgCO_2}= 0.00727kmolCO_2\\\\n_{O_2}=0.8kg*0.25*\frac{1kmolO_2}{32kgO_2}=0.00625kmolO_2\\ \\n_{Ne}=0.8kg*0.35*\frac{1kmolNe}{20.2kgNe}=0.0139kmolNe

Next, the total moles:

n_T=0.00727kmol+0.00625kmol+0.0139kmol=0.02742kmol

After that, since the process is isobaric, we can compute the work as:

W=P(V_2-V_1)

Therefore, we need to compute both the initial and final volumes which are at 260 °C and 95 °C respectively for the same moles and pressure (isobaric closed system)

V_1=\frac{n_TRT_1}{P}= \frac{0.02742kmol*8.314\frac{kPa*m^3}{kmol\times K}*(260+273)K}{450kPa}=0.27m^3\\ \\V_2=\frac{n_TRT_2}{P}= \frac{0.02742kmol*8.314\frac{kPa*m^3}{kmol\times K}*(95+273)K}{450kPa}=0.19m^3

Thereby, the magnitude and direction of work turn out:

W=450kPa(0.19m^3-0.27m^3)\\\\W=-37.6kJ

Thus, we conclude that since it is negative, work is done on the system (first law of thermodynamics).

Regards.

7 0
3 years ago
Create and balance a chemical equation for the following statement.
m_a_m_a [10]
FeCl₂  +  2NH₄OH  →  Fe(OH)₂  +  2NH₄Cl
8 0
3 years ago
PLEASE HELP AGAIN lol thank you :))
Annette [7]
BBBBBBBBBBBBBBBBBBBBBBBBBBBBB
8 0
2 years ago
Why is it easier to find the mass of a large object then a small object?
atroni [7]
Because lager objects have much more room for mass the smaller objects. take the earth as an example the earth is very big and has alot of mass in it which makes gravity that pulls us down when we jump up. 
4 0
3 years ago
List 3 substances that have atoms which are bonded.
noname [10]

Answer:

Carbon, Hydrogen, Oxygen, Nitrogen, and Sulfur.

(Those are all the ones I know)

4 0
3 years ago
Read 2 more answers
Other questions:
  • Select the correct answer.
    13·2 answers
  • 2. Calculate the standard emf of a cell that uses the Mg/Mg+2 and Cu/Cu+2 half-cell reactions at 25ºC. Write the equation for th
    9·1 answer
  • What is the second quantum number of the 3p1 electron in aluminum 1s22s22p63s23p1?
    10·2 answers
  • For the complete combustion of 1.000 mole of methane gas at 298 K and 1 atm pressure, ΔH° = -890.4 kJ/mol. What will be the amou
    5·1 answer
  • Two atoms that isotopes of one another must have number of what
    14·1 answer
  • How many hydrogen atoms are present in 5.00 mg of aspartame?
    6·1 answer
  • A sample of aspirin weighing 5.945 g became contaminated with 2.134 g of sodium sulfate. The resulting
    11·1 answer
  • How much heat is required to change 56.0 g of ice (H2O) at 263 K to vapor (steam) at 400 K?
    6·1 answer
  • Describe the properties of oobleck when it behaves like a solid and a liquid.
    14·1 answer
  • In the lab you produce and collect 15.46 g of KNO3. If you carried out the reaction with 43.65 g of Pb(NO3)2 and 32.92 g of Kl w
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!