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
ollegr [7]
3 years ago
12

Variable that stays the same

Chemistry
1 answer:
Evgesh-ka [11]3 years ago
7 0
Control variable mi amigo
You might be interested in
At 400 K oxalic acid decomposes according to the reaction:H2C2O4(g)→CO2(g)+HCOOH(g)In three separate experiments, the intial pre
padilas [110]

Answer:

v = 2,66x10⁻⁵ P[H₂C₂O₄]

Explanation:

For the reaction:

H₂C₂O₄(g) → CO₂(g) + HCOOH(g)

At t = 0, the initial pressure is just of H₂C₂O₄(g). At t= 20000 s, pressures will be:

H₂C₂O₄(g) = P₀ - x

CO₂(g) = x

HCOOH(g) = x

P at t=20000 is:

P₀ - x + x + x = P₀+x. That means P at t=20000s - P₀ = x

For 1st point:

x = 92,8-65,8 = 27

Pressure of H₂C₂O₄(g) at t=20000s: 65,8-27 = 38,8

2nd point:

x = 130-92,1 = 37,9

H₂C₂O₄(g): 92,1 - 37,9 = 54,2

3rd point:

x = 157-111 = 46

H₂C₂O₄(g): 111-46 = 65

Now, as the rate law is :

v = k P[H₂C₂O₄]

Based on integrated rate law, k is:

(- ln P[H₂C₂O₄] + ln P[H₂C₂O₄]₀) / t = k

1st point:

k = 2,64x10⁻⁵

2nd point:

k = 2,65x10⁻⁵

3rd point:

k = 2,68x10⁻⁵

The averrage of this values is:

k = 2,66x10⁻⁵

That means law is:

v = 2,66x10⁻⁵ P[H₂C₂O₄]

I hope it helps!

4 0
3 years ago
Which of the following statements best describes a difference between mechanical waves and electromagnetic waves?
kipiarov [429]
The correct answer is the 3rd one  
6 0
3 years ago
Predict what the population of the United States will be in the year 2010
s344n2d4d5 [400]

Answer:

308.7 million

Explanation:

is my prediction

5 0
3 years ago
You have discovered your excel at community with people and understand whenever a person is being honest. Which career might you
tatuchka [14]
Therapists should be the right answer
4 0
3 years ago
Given the formula representing a compound: what is a chemical name of this compound? 2-pentene 2-pentyne 3-pentene 3-pentyne
Aleks [24]
The question is incomplete. Complete question is attached below.
..........................................................................................................................

Correct Answer: <em>Option 1) 2-pentene</em>

Reason:
Following are the IUPAC rules for naming the compound
1) Select the longest carbon chain. In present case longest carbon chain has 5 carbon atom. Hence, it is a pentane derivative.
2) In case of alkene, replace 'e' of alkane by 'ene'
3) Give lowest number to function group. In present case, it is double bond.

Applying above rules, the IUPAC name of compound is 2-pentene

4 0
3 years ago
Other questions:
  • A fruit and oatmeal bar contains 142 nutritional calories. Convert this energy to calories
    8·1 answer
  • This earth system contains water and warms the atmosphere.
    9·1 answer
  • When it is spring in China, it is ______ in South America
    13·1 answer
  • Why is carbon-12 the only isotope with an atomic mass that is a whole number?
    15·1 answer
  • Why might Marie Curie have been motivated to teach the children of beet workers?
    6·1 answer
  • How can substitution mutation affect a person’s traits?
    11·1 answer
  • Will give brain!!!<br> Need images of structures of all alkanes and alkenes
    15·2 answers
  • Which characteristic of planets depends upon its distance from the Sun?
    9·2 answers
  • Which of the following is not part of our solar system?
    13·2 answers
  • How does the curing basically take place?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!