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
maria [59]
3 years ago
7

6) Which of the following would travel the farthest in column chromatography?

Chemistry
1 answer:
Nuetrik [128]3 years ago
8 0

The answer would be C8H18, or octane. Column chromatography is a separation technique that works off of polarity. The stationary phase, in column chromatography, are non-modified silica gels. Silica gels are normally polar. This means the solvent that will elute first are non-polar molecules...then polar molecules. The polar silica gels have a stronger interaction with polar molecules like CH3OH, and therefore will lag the solvent. Additionally, as you decrease the carbons, in hydrocarbons, the molecule becomes more polar. This is not C6H6 isn't the answer and octane is.

You might be interested in
How many electrons are there in second principal energy<br> level(n=2) of a phosphorus atom?
salantis [7]

Answer:

8 electrons

Explanation:

Phosphorous is the element of group 15 and third period. The atomic number of chlorine is 15 and the symbol of the element is P.

The electronic configuration of the element phosphorus is:-

1s^22s^22p^63s^23p^3

Thus, from the electronic configuration shown above,

In n = 2, the total number of electrons are 8 which are present in 2s^22p^6

6 0
3 years ago
What is Chemistry and is it an applied or pure science subject?​
elixir [45]

Answer:

Explanation:

Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions. And The difference between Applied and Pure Sciences is that Applied Sciences focuses on the scientific knowledge of nature, it is more related to engineering and technology. Pure sciences is more related to theories and predictions to understand the world of nature, often performed in a laboratory.

Please give me more points!~~

4 0
3 years ago
Which of the following is a synthesis reaction?
Allushta [10]

Answer:  4 A1+3 02 → 2 Al2O3

Explanation: Two different atoms combines together to produce a compound.

7 0
2 years ago
Read 2 more answers
Please I really really need help!!!
ira [324]

Answer:

1) 40

2) 2.25 moles

3) 17

4) 120

5) Fe₂O₃

Explanation:

Please see attached picture for full solution.

6 0
3 years ago
Read 2 more answers
Given that a for HCN is 6. 2×10^−10 at 25 °C. What is the value of b for cn− at 25 °C?
Kay [80]

If Ka for HCN is 6. 2×10^−10 at 25 °C, then the value of Kb for cn− at 25 °C is 1.6 × 10^(-5).

<h3>What is base dissociation constant? </h3><h3 />

The base dissociation constant (Kb) is defined as the measurement of the ions which base can dissociate or dissolve in the aqueous solution. The greater the value of base dissociation constant greater will be its basicity an strength.

The dissociation reaction of hydrogen cyanide can be given as

HCN --- (H+) + (CN-)

Given,

The value of Ka for HCN is 6.2× 10^(-10)

The correlation between base dissociation constant and acid dissociation constant is

Kw = Ka × Kb

Kw = 10^(-14)

Substituting values of Ka and Kw,

Kb = 10^(-14) /{6.2×10^(-10) }

= 1.6× 10^(-5)

Thus, the value of base dissociation constant at 25°C is 1.6 × 10^(-5).

learn more about base dissociation constant :

brainly.com/question/9234362

#SPJ4

4 0
2 years ago
Other questions:
  • Help me <br> Which rock is NOT sedimentary?<br> A.shale<br> B.schist<br> C.limestone<br> D.sandstone
    10·2 answers
  • In monostremes the placenta absors oxygen and food from the mothers blood.
    14·1 answer
  • Which has most likely been peer reviewed?
    6·1 answer
  • If the heat of reaction is negative, the reaction is _____. Select one:
    11·2 answers
  • During the recrystallization of a solid, the sample is dissolved in hot solvent then filtered while hot. The filtrate is allowed
    12·1 answer
  • Write a brief desperation for each of newtons three laws
    8·1 answer
  • WILL GIVE BRAINLIST: Which compound is more soluble in water at 25 degrees Celsius?
    13·1 answer
  • Can we talk about planets or talk about life lol (keep kid friendly)
    6·2 answers
  • A book is sliding across a horizontal tabletop. As it slides, slows down. Which of the following statements best explains this s
    10·2 answers
  • Give the systematic name for the compound Al(NO3)3.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!