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
Lena [83]
2 years ago
9

A certain first-order reaction 45% complete in 65seconds, determine the rate constant and the half life for the process ​

Chemistry
1 answer:
masha68 [24]2 years ago
3 0

The rate constant : k = 9.2 x 10⁻³ s⁻¹

The half life : t1/2 = 75.3 s

<h3>Further explanation</h3>

Given

Reaction 45% complete in 65 s

Required

The rate constant and the half life

Solution

For first order ln[A]=−kt+ln[A]o

45% complete, 55% remains

A = 0.55

Ao = 1

Input the value :

ln A = -kt + ln Ao

ln 0.55 = -k.65 + ln 1

-0.598=-k.65

k = 9.2 x 10⁻³ s⁻¹

The half life :

t1/2 = (ln 2) / k

t1/2 = 0.693 : 9.2 x 10⁻³

t1/2 = 75.3 s

You might be interested in
Help me plzz in chemistry​
AlexFokin [52]

a) f2 loses electrons and is oxidised. li gains electrons and is reduced

c)sn2+ loses electrons and is oxidised.Al gains electrons and is reduced

b)br2 loses electrons and is oxidised. I- in KI gains electrons and is reduced

5 0
3 years ago
What is the human body's first line of defense against invading pathogens such as bacteria and viruses?
Sedbober [7]
ANTI---------- BODIES!!!!!!!
3 0
3 years ago
Which phrases describe all the outer planets' motion? Check all that apply.
viktelen [127]
  1. answer:fast rotation. 2. explanation: I choose this as my answer because when the outer planets orbit it move faster
3 0
3 years ago
Gregor Mendel identified seven distinguishable individual __________________________Each one he discovered had two different for
Eddi Din [679]

Answer:

objects

Explanation:

6 0
3 years ago
If the pressure, volume, and temperature of a gas are known, which can most likely be found by using the ideal gas law?
Radda [10]
Standard temperature and pressure
3 0
2 years ago
Read 2 more answers
Other questions:
  • Isotopes are atoms of the same element with the same number of protons and a different number of
    12·2 answers
  • What do atoms form when they share electron pairs molecules isotopes elements?
    12·1 answer
  • A solution is prepared by dissolving 7.14 g KClO in 318 g of water. What is the molality of this solution? You do not need to sh
    6·1 answer
  • a block of wood has a mass of 6.0 G and a volume of 12.0 centimeters what is the density of the block of wood​
    12·1 answer
  • How many atoms are in 2 miles of h2o
    8·1 answer
  • A 6.40 g sample of solid KCl was dissolved in 42.0 g of water. The initial temperature of the water was 20.60°C. After the compo
    6·1 answer
  • The concentrations of ions are very different inside and outside a nerve cell due to _____.
    6·1 answer
  • A ring made of pure gold contains 5.29 x 1022 atoms. How many moles are in the ring?
    6·1 answer
  • Pls help I don’t understand at all
    9·1 answer
  • How is a polar compound formed?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!