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
kolbaska11 [484]
2 years ago
8

5. -9. 2. -3. b

Chemistry
1 answer:
tankabanditka [31]2 years ago
4 0

-12 is the answer hope it helps :D

You might be interested in
Suppose a 250. mL flask is filled with 0.30 mol of N_2 and 0.70 mol of NO. The following reaction becomes possible:N_2(g) +O2 →
Inessa [10]

Answer:

0.4 M

Explanation:

Equilibrium occurs when the velocity of the formation of the products is equal to the velocity of the formation of the reactants. It can be described by the equilibrium constant, which is the multiplication of the concentration of the products elevated by their coefficients divided by the multiplication of the concentration of the reactants elevated by their coefficients. So, let's do an equilibrium chart for the reaction.

Because there's no O₂ in the beginning, the NO will decompose:

N₂(g) + O₂(g) ⇄ 2NO(g)

0.30 0 0.70 Initial

+x +x -2x Reacts (the stoichiometry is 1:1:2)

0.30+x x 0.70-2x Equilibrium

The equilibrium concentrations are the number of moles divided by the volume (0.250 L):

[N₂] = (0.30 + x)/0.250

[O₂] = x/0.25

[NO] = (0.70 - 2x)/0.250

K = [NO]²/([N₂]*[O₂])

K = \frac{(\frac{0.70 -2x}{0.250})^2 }{\frac{0.30+x}{0.250}*\frac{x}{0.250} }

7.70 = (0.70-2x)²/[(0.30+x)*x]

7.70 = (0.49 - 2.80x + 4x²)/(0.30x + x²)

4x² - 2.80x + 0.49 = 2.31x + 7.70x²

3.7x² + 5.11x - 0.49 = 0

Solving in a graphical calculator (or by Bhaskara's equation), x>0 and x<0.70

x = 0.09 mol

Thus,

[O₂] = 0.09/0.250 = 0.36 M ≅ 0.4 M

3 0
3 years ago
Is it called when a substance enters a gaseous phase without boiling?
Helen [10]

Answer:

its called sublimation

3 0
3 years ago
Read 2 more answers
Which of the compounds, kh, nh3, c2h6 and hf are ionic compounds?
Readme [11.4K]

The compound which is ionic is Kh

Kh is ionic because ionic compound  is made  between a metal and a non metal. K( potassium)   is a metal while H (hydrogen) is a non metal. The bond between potassium and hydrogen form ionic bond whereby potassium loses one electron and hydrogen gain one electron to form an ionic compound.

6 0
3 years ago
What does a hygrometer measure?
gogolik [260]

Answer:

  • humidity

Explanation:

Hygrometer, instrument used in meteorological science to measure the humidity, or amount of water vapour in the air. Several major types of hygrometers are used to measure humidity.

3 0
2 years ago
Read 2 more answers
What is the process that changes a substances from a liquid to a gas below the substance's boiling point?
Vera_Pavlovna [14]
This process is called evaporation as I believe
7 0
3 years ago
Other questions:
  • Please help ill medal and fan!
    8·1 answer
  • Which of the following is true about the scientific method?
    15·1 answer
  • A reaction involves the parts of two compounds switching places to form two new compounds. What type of reaction is this?
    9·1 answer
  • A researcher is trying to culture mouse embryonic stem cells, and is providing them with glucose (sugar) as a food source. In or
    13·1 answer
  • When ice is melting, the heat being added causes:
    9·2 answers
  • Greenhouse gases in the atmosphere contribute to
    6·1 answer
  • Calculate the number of molecules in 100. g of O2 *
    6·1 answer
  • What does a positive cell voltage mean
    8·2 answers
  • 2. A body was discovered in the woods. The man has been missing for two days. The
    13·1 answer
  • Which of the following chemical equations are correctly balanced? Balance the equations that are not balanced.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!