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
Ronch [10]
3 years ago
7

Enter your answer in the provided box. For the simple decomposition reaction AB(g) → A(g) + B(g) rate = k[AB]2 and k = 0.20 L/mo

l·s. If the initial concentration of AB is 1.50 M, what is [AB] after 11.9 s?
Chemistry
1 answer:
sladkih [1.3K]3 years ago
3 0

Answer:

The answer to the question is;

The concentration of AB, which is written as [AB] after 11.9 s is 0.328 M.

Explanation:

The form of the equation for the second order integrated rate law is

y = mx +b

Where:

y = 1/A

m = k

x = t and

b = 1/A₀

Therefore for the reaction

AB(g) → A(g) + B(g)

rate = k[AB]² and k = 0.20 L/mol·s we have

\frac{1}{[AB]} = \frac{1}{[AB]_0} + kt

Since the initial concentration of AB is [AB]₀ = 1.50 M,

t = 11.9 s

k = 0.20 L/mol·s

we have

\frac{1}{[AB]} = \frac{1}{1.50 M/L} + 0.20 L/(mol)(s)*11.9 s

\frac{1}{[AB]} = 3.047 L/mol

[AB] = 0.328 M

The concentration of AB after 11.9 s is 0.328 M.

You might be interested in
Why are the oxidation and reduction half-reactions separated in an<br> electrochemical cell?
Mrac [35]

Answer:

The half-cells separate the oxidation half-reaction from the reduction half-reaction and make it possible for current to flow through an external wire.

Explanation:

7 0
3 years ago
Read 2 more answers
Radio stations identify themselves by their position on the radio dial such as 90.1 and 93.3. This number is based on the number
netineya [11]
<span>D. frequency is the answer</span>
4 0
3 years ago
Which ones are false? need help please.
kirill [66]

Answer:

A.) False B.)False C.) True D.) False E.) False

Explanation:

5 0
3 years ago
Read 2 more answers
He rate constant of a reaction is 4.55 × 10−5 l/mol·s at 195°c and 8.75 × 10−3 l/mol·s at 258°c. what is the activation energy o
Xelga [282]

Answer : The activation energy of the reaction is, 17.285\times 10^4kJ/mole

Solution :  

The relation between the rate constant the activation energy is,  

\log \frac{K_2}{K_1}=\frac{Ea}{2.303\times R}\times [\frac{1}{T_1}-\frac{1}{T_2}]

where,

K_1 = initial rate constant = 4.55\times 10^{-5}L/mole\text{ s}

K_2 = final rate constant = 8.75\times 10^{-3}L/mole\text{ s}

T_1 = initial temperature = 195^oC=273+195=468K

T_2 = final temperature = 258^oC=273+258=531K

R = gas constant = 8.314 kJ/moleK

Ea = activation energy

Now put all the given values in the above formula, we get the activation energy.

\log \frac{8.75\times 10^{-3}L/mole\text{ s}}{4.55\times 10^{-5}L/mole\text{ s}}=\frac{Ea}{2.303\times (8.314kJ/moleK)}\times [\frac{1}{468K}-\frac{1}{531K}]

Ea=17.285\times 10^4kJ/mole

Therefore, the activation energy of the reaction is, 17.285\times 10^4kJ/mole

8 0
3 years ago
Read 2 more answers
How many moles of methane (CH4) is<br> 6.70 x 1022 atoms of methane?
suter [353]

Answer:

0.1113  mol

Explanation:

Data Given:

no. of atoms of CH₄= 6.70 x 10²² atoms

no. of moles of methane (CH₄) = ?

Solution:

we will find no. of moles of methane (CH₄)

Formula used

          no. of moles = no. of atoms / Avogadro's number

Where

Avogadro's number = 6.022 x 10²³

Put values in above equation

         no. of moles = 6.70 x 10²² atoms / 6.022 x 10²³ (atoms/mol)

         no. of moles = 0.1113  mol

So,

There are 0.1113 moles of methane.

8 0
3 years ago
Other questions:
  • Why is gold usually found in its pure form
    11·1 answer
  • What’s the connection between population and limiting factors?
    10·1 answer
  • Question 3) A 1.00 L buffer solution is 0.250 M in HF and 0.250 M in LiF. Calculate the pH of the solution after the addition of
    12·1 answer
  • Which element has the highest first electron affinity? which element has the highest first electron affinity? te ba xe cs?
    13·1 answer
  • Scientific notation is
    13·2 answers
  • What is the oxidation number for Zn(OH)4 2-?
    5·1 answer
  • HELP ASAP PLEASE!!!
    7·1 answer
  • Calculate the change in ph if 0.070 g of solid naoh is added to 100 ml of the solution in the problem above.
    5·1 answer
  • Based on periodic properties, choose the more metallic element from each of the following pairs.
    8·1 answer
  • In a heat engine, 500 J of heat enters the system, and the piston does 300 J of work. What is the final internal (thermal) energ
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!