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
N76 [4]
3 years ago
10

Gaseous hydrogen iodide is placed in a closed container at 425∘C, where it partially decomposes to hydrogen and iodine: 2HI(g)⇌H

2(g)+I2(g) At equilibrium it is found that [HI]= 3.52×10−3 M , [H2]= 4.78×10−4 M , and [I2]= 4.78×10−4 M . You may want to reference ( pages 644 - 645) Section 15.5 while completing this problem. Part A What is the value of Kc at this temperature? Express the equilibrium constant to three significant digits
Chemistry
1 answer:
murzikaleks [220]3 years ago
5 0

Answer:

0.0184

Explanation:

Let's consider the following reaction at equilibrium.

2 HI(g) ⇌ H₂(g) + I₂(g)

The concentration equilibrium constant (Kc) is equal to the product of the concentration of the products raised to their  stoichiometric coefficients divided by the product of the concentration of the reactants raised to their  stoichiometric coefficients.

Kc = [H₂] × [I₂] / [HI]²

Kc = (4.78 × 10⁻⁴) × (4.78 × 10⁻⁴) / (3.52 × 10⁻³)²

Kc = 0.0184

You might be interested in
Which statement below best describes mutations?
Studentka2010 [4]

Answer:

C. Mutations are a change in DNA or a chromosome and can be helpful, harmful or may have no affect.

Explanation:

  • Mutations are spontaneous random changes that occurs in the genetic make up of an organisms. Mutations are rare and their rate of occurrence is random.
  • Mutations may occur on the gene level known as gene mutations or at chromosome levels called chromosomal mutations.
  • Mutations may be beneficial, harmful or have no effect on a given organisms. Harmful mutations cause disorders that may lead to abnormality or death of an organisms. Beneficial mutations improve an organisms adaptability to the environment.
8 0
3 years ago
The President's Challenge Program is a fitness evaluation designed for __________.
lara [203]
Hi there!

I believe the answer to this is B. Elementary and High school students.

Hope this helps! ☺♥
7 0
3 years ago
Read 2 more answers
a particular application calls for N2 g with a density of 1.80 g/L at 32 degrees C what must be the pressure of the n2 g in mill
baherus [9]

Answer:

1223.38 mmHg

Explanation:

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 62.3637\text{ L.mmHg }mol^{-1}K^{-1}

Also,  

Moles = mass (m) / Molar mass (M)

Density (d)  = Mass (m) / Volume (V)

So, the ideal gas equation can be written as:

PM=dRT

Given that:-

d = 1.80 g/L

Temperature = 32 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (32 + 273.15) K = 305.15 K

Molar mass of nitrogen gas = 28 g/mol

Applying the equation as:

P × 28 g/mol  = 1.80 g/L × 62.3637 L.mmHg/K.mol × 305.15 K

⇒P = 1223.38 mmHg

<u>1223.38 mmHg must be the pressure of the nitrogen gas.</u>

5 0
3 years ago
Which statement is true? Energy cannot be created or destroyed. Energy can be destroyed but not created. Energy can be created b
vaieri [72.5K]
Energy can not be created and cannot be destroyed
<span />
6 0
3 years ago
Read 2 more answers
What drives convection currents in the atmosphere?
pantera1 [17]

Answer:

a I guess

Explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • What about these questions
    10·1 answer
  • I need help with the question they are asking
    15·1 answer
  • Solid crystals with _____ bonds are the best insulators. metallic covalent ionic hydrogen
    6·2 answers
  • Follow the Carbon in Citric Acid Cycle: 1. How many cycles does it take to convert Acetyl CoA to CO2
    8·1 answer
  • Copper (II) sulfate solution reacts with magnesium metal ? what is the equation for this reaction?
    8·1 answer
  • If a gaseous mixture is made by combining 2.74 g Ar 2.74 g Ar and 4.90 g Kr 4.90 g Kr in an evacuated 2.50 L container at 25.0 ∘
    6·1 answer
  • How do you write the equation for when C6H12O6 is burned in oxygen gas?
    11·1 answer
  • Andrew gathered several different species of seed plants. Which three characteristics do all the plants most likely
    8·2 answers
  • Which action is a change in state
    11·1 answer
  • Which would be the best material to use for making tea kettles?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!