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
Zigmanuir [339]
3 years ago
15

The rate constant for this first‑order reaction is

Chemistry
1 answer:
jenyasd209 [6]3 years ago
5 0

Answer:

t = 5.7634 s

Explanation:

  • A → Pdts
  • - rA = K (CA)∧α = - δCA/δt

∴ T = 400°C

∴ α = 1 ....first-order

∴ CAo = 0.950 M

∴ CA = 0.300 M

⇒ t = ?

⇒ - δCA/δt = K*CA

⇒ - ∫δCA/CA = K*∫δt

⇒ Ln (CAo/CA) = K*t

⇒ t = Ln(CAo/CA) / K

⇒ t = (Ln(0.950/0.300)) / (0.200 s-1)

⇒ t = 1.1527 / 0.200 s-1

⇒ t = 5.7634 s

You might be interested in
The density of gold is 19.3 g/cm3. The density of iron pyrite is 5.0 g/cm3. If a nugget of iron pyrite and a nugget of gold each
stich3 [128]
That they are different.. because they have the same mass but different densities

8 0
2 years ago
Read 2 more answers
***URGENT PLEASE**** Select all of the bases listed *
Masteriza [31]

Answer:

NaOH (a strong base)

Ammonia ( weak base )

6 0
2 years ago
The volume of a gas is 4.0 L when the pressure is 1.00 atm. At the same temperature, what is the pressure at which the volume of
Leokris [45]

<u>Answer:</u> 2.00 atm

<u>Explanation:</u>

The gas is kept under the same temperature in this problem. Assuming the amount of gas is constant, we can apply the Boyle's law.

The Boyle's law equation,

P₁V₁ =  P₂V  ₂

Plug in the values,

1.00 atm x 4.0 L =  P₂  x 2.0 L

Simplify,

4.00 atm L = 2  P₂ L

Now flip the equation,

2  P₂ L = 4.00 atm L

Dividing both sides by 2 we get,

P₂ = 2.00 atm

8 0
3 years ago
Which of the following best explains why ionic crystals are brittle?​
Natalka [10]

Packing

Explanation:

Ionic crystals are  brittle due to the tight packing of their crystals. This provides little to no mobility between one another.

  • Brittleness implies having little to no elasticity.
  • Ionic crystals are held together by strong crystal lattice forces
  • These forces prevents crystals from freely rotating and moving space.
  • It holds them rigidly and fixed in place.
  • Ionic crystals are hard and held electrostatic forces.

learn more:

Ionic compounds brainly.com/question/6071838

#learnwithBrainly

3 0
3 years ago
If cells did not work together what would happen to the organisms
arlik [135]

Surely, If cells did not work together in an organism, there won't be formation of new cells and life process would stop

<h3>Living organisms </h3>

Living organisms; be it plants or animals are any organic or living system composed of cells and function as an individual entity.

  • All living organisms share a number of key characteristics or functions such as movement, respiration, homeostasis, reproduction, growth, evolution, competition and others.

  • Animals and plants also posess systems such as the digestive, skeletal, transport, nervous, excretory, respiratory and reproductive system.

  • Living organisms are also taxonomically classified as either unicellular microorganisms or multicellular plants and animals

So therefore, surely, If cells did not work together in an organism, there won't be formation of new cells and life process would stop

Learn more about living organisms:

brainly.com/question/17259533

#SPJ1

5 0
11 months ago
Other questions:
  • If motion starts and stops at the same place is this distance zero ?
    7·1 answer
  • List 2 everyday situations in which it would be useful to identify unknown substances.
    14·1 answer
  • Determine the number of protons and neutrons in an isotope of bromine (br) with a mass number/atomic mass of 79. (the atomic num
    12·1 answer
  • Which part of a hypothesis should the student add to this that could also be tested in other experiments?
    6·2 answers
  • Although each famous crater looks different, they have the same basic circular shape. Visit the Rio Cuarto craters in Argentina
    7·1 answer
  • When you test starch with Barfoed’s reagent, what would be the answer, positive or negative?
    13·1 answer
  • ANSWER ASAP GIVING BRAINLIEST FIVE STARS AND HEART!
    7·1 answer
  • Charles Darwin's theory of evolution describes how species evolve due to natural selection. Which of these is NOT evidence of na
    12·1 answer
  • Pollen
    10·1 answer
  • Please some one helpppp!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!