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
ch4aika [34]
3 years ago
9

A student is extracting caffeine from water with dichloromethane. The K value is 4.2. If the student starts with a total of 30 m

g of caffeine in 2 mL of water and extracts twice with 2 mL of dichloromethane, how much caffeine will be in the dichloromethane extract
Chemistry
1 answer:
ella [17]3 years ago
8 0

Answer:

787.5 is a transversal of lines I and m that forms 8 angles and the other way around the world health organization and the other one is a transversal of lines I and m that forms 8 angles and the other things that you can see in the picture of with the first term 8 and a common ratio of the following values would be a little different to the one you have the

You might be interested in
Chemistry Help:
AlekseyPX
Crystaline solids have specific geometerical shape so the answer is false
5 0
4 years ago
What is the energy required to remove the electron from a hydrogen atom in the n = 11 state?
zaharov [31]

Based on the data given, the energy required to remove an electron from a hydrogen atom in the n = 11 state is -0.112 eV

<h3>What is ionization energy?</h3>

Ionization energy is the energy requiredto remove an electron from a neutral atom or a cation in its gaseous state.

To calculate the energy required to remove the electron from a hydrogen atom in the n = 11 state, the formula below is used:

  • E_n = \frac{E_0 × Z^{2}}{n^{2}}

where

E_0  \: is  \: ground  \: state  \: energy  \: of \:  hydrogen \:  atom \:  = -13.6 eV \\

  • Z = 1
  • n = 11

substituting the values:

E_n = \frac{ - 13.6 × 1^{2}}{11^{2}} \:  =  - 0.112 \: eV

Therefore, the energy required to remove an electron from a hydrogen atom in the n = 11 state is -0.112 eV

Learn more about ionization energy at: brainly.com/question/1445179

5 0
2 years ago
Mr.Davies has requested that you wait for 10 more minutes is that informal or formal
LUCKY_DIMON [66]

Answer:

Formal

Explanation:

7 0
4 years ago
Read 2 more answers
Are all elements abbreviated with one or two letters? If not, name some that aren't.
mixas84 [53]
Some elements that are not abbreviated with one or two letters on the periodic table are Ununoctium (Uuo) and Ununtrium (Uut).
7 0
4 years ago
Read 2 more answers
In what way or ways would the physical universe be different if protons were negatively charged and electrons were positively ch
vagabundo [1.1K]

Answer:

Nothing will happen as long as the magnitude of charges remains same...

Explanation:

We know that protons are 1836 times more massive than electrons but they have same magnitude of charge overall. So, if we reverse the polarities the system would still be stable as long as the magnitudes of charges are stable and vice versa.

7 0
3 years ago
Other questions:
  • What is the most important part of driving
    7·2 answers
  • What is the symbol of iron
    13·1 answer
  • An athlete with a high count of red blood cells will perform well in tests of physical
    12·1 answer
  • the reaction of aluminium chloride with silver acetate. what volume of 0.2M AlCl3 wpuld be needed to react completely with 40 ml
    6·1 answer
  • Brainly answer will be given. Thankyou
    5·1 answer
  • How can You friend electrons, protons and neutrons in an element?
    6·1 answer
  • True or false water and salt are examples of elements
    10·2 answers
  • Compare the values of the spin quantum number for two electrons in the same orbital.
    11·1 answer
  • RIGHT NOW PLEASE <br><br> Polar vs nonpolar molecules definitions.
    14·1 answer
  • 1. How much heat is required to raise the temperature of 4.64kg of lead from 150°C to 219°C?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!