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
WARRIOR [948]
3 years ago
5

6. At 180 °C, the decomposition of a gaseous compound XO2 is a first order reaction

Chemistry
1 answer:
hichkok12 [17]3 years ago
4 0

The rate of decomposition of XO2 after 1 hour : \tt A=A_o.e^{-1.08}

<h3>Further explanation</h3>

Given

the half-life 38.6 min

time of decomposition = 1 hour

Required

the rate of decomposition

Solution

First-order reaction :

\tt A=A_o.e^{-kt}

the half life=t1/2 :

\tt t\frac{1}{2}=\dfrac{ln~2}{k}

so the rate constant (k) :

\tt k=\dfrac{ln~2}{38.6}=0.018

The rate after 1 hour=60 min :

\tt A=A_o.e^{-0.018\times 60}\\\\A=A_o.e^{-1.08}

You might be interested in
24.3 2 An artifact classified as seeds, found in a site at Newlands Cross, Ireland, is found to have a 14C radioactivity of 0.10
Rina8888 [55]

Answer:

Age ≅ 7500 years

Explanation:

All radioactive decay is 1st order kinetics and described by the expression

A = A₀e^-kt => t = ln(A/A₀) / -k

k = 0.693 / t(half life) = (0.693 / 5730)yrs⁻¹ = 1.21 x 10⁻⁴ yrs⁻¹

t = Age = [ln(0.103/0.255) / - 1.21 x 10⁻⁴] yrs = 7500 years

5 0
3 years ago
What is the mass of sodium in 3 moles of sodium chloride
SashulF [63]

4.00 moles of sodium has a mass of 91.96 grams.

To find an element's molar mass, you can use its atomic weight.

8 0
3 years ago
How do the test variables (independent variables) and outcome variables (dependent variables) in an experiment compare? A. The t
Ghella [55]

Answer:

I'm on the exact same queston

6 0
3 years ago
Read 2 more answers
What are the 2 layers of continental crust called?​
noname [10]

Answer:

silica + aluminum or silica +magnetism

Explanation:

5 0
3 years ago
How many individual pencils are equal to 1 gross of pencils
Art [367]

i would say 4 because 4 is a gross number

4 0
2 years ago
Other questions:
  • Chem homework, help?
    9·1 answer
  • Sterling silver contains silver and copper metals. if a sterling silver chain contains 17.6g of silver and 2.40g of copper, what
    14·1 answer
  • Which geographic features are associated with a divergent boundary <br> (Can select more then one)
    7·2 answers
  • Consider the reaction. Upper H subscript 2 upper o (g) plus upper C l subscript 2 upper O (g) double-headed arrow 2 upper H uppe
    10·2 answers
  • 1.Explore two more isotopes and how it is useful in our day to day life.
    13·1 answer
  • What is the mass of 3.6 x 10∧24 atoms of Zinc (Zn)?
    11·1 answer
  • Which objects could you stand near to feel the heat​
    12·1 answer
  • H E L P M E<br> ashlynkhimehardinan<br><br> complete the sentence
    11·2 answers
  • 1. What happens between the molecules of two objects when a hot object touches a cooler object?
    15·2 answers
  • What do all fossils fuels have in common
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!