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]
2 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]2 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
What was the scientific basis for the unit amu
Naya [18.7K]
Natural abundance of oxygen I think
4 0
3 years ago
How are lead and plastic foam different?
Natalka [10]
Lead is heavier and more resistant. Plastic foam is light and can easily be broken
 
4 0
3 years ago
Read 2 more answers
Which of the following is considered an alternative energy resource?
ELEN [110]
B. Biomass

(I guess so cause other ones are already being used)
4 0
3 years ago
Based on the activity series, which one of the reactions below will occur (Spontaneous)? A. Mn (s) + NiCl2 (aq) → MnCl2 (aq) + N
kap26 [50]

Answer:

Mn (s) + NiCl2 (aq) → MnCl2 (aq) + Ni

Explanation:

The order of displacement of metals from aqueous solution by another metal is defined by the activity series of metals.

The activity series arranges metals in order of reactivity and increasing electrode potentials. The less negative the electrode potential of a metal is, the less reactive it is and the lower it is found in the activity series.

Nickel has a less negative electrode potential than manganese hence it is displaced from an aqueous solution of its salt by manganese spontaneously.

8 0
3 years ago
How are photons emitted by atoms?
Paul [167]

Explanation:

<em>When the electron changes levels, it decreases energy and the atom emits photons. The photon is emitted with the electron moving from a higher energy level to a lower energy level. The energy of the photon is the exact energy that is lost by the electron moving to its lower energy level.</em>

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following displays the correct change in enthalpy and best describes the reaction below? 2CsCl(aq) + Na2SO4(aq) 2Na
    5·1 answer
  • Flow of heat energy through liquids and<br> gases
    8·1 answer
  • What is the pressure of a mixture of nitrogen and oxygen is partial pressure of nitrogen is 594MMHG and the punisher pressure of
    10·1 answer
  • What is colligative property? why does theproperty changes the way that it does when the amount of solute is increased. State an
    15·1 answer
  • Consider the total ionic equation below.
    7·1 answer
  • Yvvyycyvybny just gfy
    7·1 answer
  • The surface area of a star can be estimated based on the stars
    5·1 answer
  • Which of the following would be considered an Exothermic Reaction?*
    8·1 answer
  • How many moles are in 454 Liters of a gas?
    11·1 answer
  • Be sure to answer all parts. Select the anti periplanar geometry for the E2 reaction of (CH3)2CHCH2Br with base. mc2x mc2xd1 mc2
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!