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
never [62]
3 years ago
7

Hypochlorous acid decays in the presence of ultraviolet radiation. Assume that degradation occurs accord- ing to first-order kin

etics and the rate of degradation was measured to be 0.12 day−1 (at a particular sun- light intensity and temperature). Given this, how long does it take for the concentration of hypochlorous acid to reach nondetectable levels (0.05 mg · L−1) if the initial concentration were 3.65 mg · L−1?
Chemistry
1 answer:
Dennis_Churaev [7]3 years ago
3 0

Answer:

35.75 days

Explanation:

From the given information:

For first-order kinetics, the rate law can be expressed as:

\mathsf{In \dfrac{C}{C_o} = -kt}

Given that:

the rate degradation constant = 0.12 / day

current concentration C = 0.05 mg/L

initial concentration C₀ = 3.65 mg/L

\mathsf{In( \dfrac{0.05}{3.65})= -(0.12) t}

㏑(0.01369863014) = -(0.12) t

-4.29 = -(0.12)

t = -4.29/-0.12

t = 35.75 days

You might be interested in
In a very violent reaction called a thermite reaction, aluminum metal reacts with iron (III) oxide to form iron metal and alumin
leva [86]
Here's the equation:
<span>Fe2 O3 + 2Al → 2Fe + Al2 O3 
</span>
Here's the question.
What mass of Al will react with 150g of Fe2 O3? 

<span>In every 2 moles Al you need 1 mole Fe2O3 </span>

<span>moles = mass / molar mass </span>
<span>moles Fe2O3 = 150 g / 159.69 g/mol </span>
<span>= 0.9393 moles </span>

<span>moles Al needed = 2 x moles Fe2O3 </span>
<span>= 2 x 0.9393 mol </span>
<span>= 1.879 moles Al needed </span>

<span>mass = molar mass x moles </span>
<span>mass Al = 26.98 g/mol x 1.879 mol </span>
<span>= 50.69 g </span>
<span>= 51 g (2 sig figs) 
</span>
So the <span>mass of Al that will react with 150g of Fe2 O3 is 51 grams.</span>
3 0
3 years ago
How many oxygen molecules are needed to make 10 carbon dioxide molecules according to the following balanced chemical equation?
11Alexandr11 [23.1K]
<h2 /><h2 /><h2>answer.</h2>

five oxygen molecules

step by step explanation.

according to the equation,one molecule of oxygen is enough to react with two carbon molecules thus 10 carbon molecules need 5oxygen molecules

6 0
3 years ago
What does 3 dots inside a silver ring mean?
Alex73 [517]
It's reported inside the riddles or decorations
8 0
3 years ago
Read 2 more answers
When the glucose transport maximum is reached, _______.?
n200080 [17]
Glucose is extracted in the urine and all of the glucose is reabsorbed. 
8 0
3 years ago
Number 2 plsssssssssssss
Fantom [35]
The answe is C. tundra
6 0
3 years ago
Other questions:
  • Which state of matter expands when heated and is easy to compress
    8·2 answers
  • What is the electron configuration of a potassium ion when it has formed an ionic bond with a bromine ion?
    9·2 answers
  • If the nucleus was the size of a tennis ball the atom would be the size of....?
    15·2 answers
  • How can the difference in the brightness of spectral lines be explained
    12·1 answer
  • What is the density of platinum
    13·2 answers
  • Answer the question below ​
    9·1 answer
  • What is the method use to separate sand and water​
    6·1 answer
  • Describe the oceanic crust NO LINKS
    13·2 answers
  • If you had an object with a mass of 76g and a volume of 22 ml, what is its density? If you cut this object in half, what would b
    13·1 answer
  • Which histone helps stabilize the solenoid structure?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!