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
JulsSmile [24]
3 years ago
14

i have a 5 M stock solution of kcl and i need a 400mM working concentration (1x). if i want to make a 10 ml of a 2x concentratio

n, how much 5 M stock and how much water do i need to add together
Biology
1 answer:
Lyrx [107]3 years ago
7 0

<u>Answer:</u>

<em>8.4 ml of water is needed to make a 10 ml of a 2x concentration.</em>

<u>Explanation:</u>

<em>From question,</em>

<em>M1= 5M,</em>

<em>M2= 400mM \times 2 (2 \times solution) =0.8M,</em>

<em>V2= 10ml</em>

<em>V1=  \frac{(M2 \times V2)}{M1}</em>

<em>This gives V1 = 1.6 ml</em>

<em>V1 is the available volume of water in the stock solution. </em>

To obtain 10ml of 2x concentration, the volume of water required is: 10-1.6 =8.4mlof water.

<em>Hence 8.4 ml of water is needed to make a 10 ml of a 2x concentration.</em>

You might be interested in
Protists can be found ??
WITCHER [35]
They can be found in all of those places, but are best suited to moist areas. c:
8 0
3 years ago
Read 2 more answers
Which portion of a reflex arc is most likely to be located entirely within the central nervous system?.
Rus_ich [418]

Answer:

interneuron.

Explanation:

The interneuron is most likely to be located entirely within the central nervous system.

4 0
2 years ago
What's another name for the shoulder blade​
const2013 [10]

Answer:

Another name is <u><em>Scapula</em></u>

The bones of the shoulder consist of the humerus (the upper arm bone), the scapula (the shoulder blade), and the clavicle (the collar bone). The clavicle is the only bony attachment between the trunk and the upper limb. The familiar flat triangular bone at the back of the shoulder. Known familiarly as the wingbone or, medically, as the scapula. The word "scapula" (with the accent on the first syllable) is Latin.

Explanation:

Hope this helps :)

If I told too much the answer to your question is <u><em>Scapula </em></u>

8 0
3 years ago
What are the type of germination in plant​
Pavlova-9 [17]

Answer: Hypogeal Germination and Epigeal Germination

Explanation: Facts

4 0
3 years ago
Match each blood vessel with a fact.
Nookie1986 [14]
A. Veins 
B. <span>Arteries
C. </span><span>Capillaries</span>
4 0
3 years ago
Other questions:
  • What is the process in which bacteria take up pieces of DNA from their environment?
    15·1 answer
  • What two vital functions does the lymphatic system perform in the body ?
    7·1 answer
  • Help plsssssssssssssssss
    13·1 answer
  • What is the study of earths atmosphere and climate
    8·1 answer
  • What name is given to the process when a cell divides to produce Gametes??
    5·2 answers
  • Which specific process helps the respiratory system get rid of excess water and heat?
    7·1 answer
  • What is the ratio of surface area to volume for a sphere with the following
    15·1 answer
  • What two element makeup an ecosystem
    12·1 answer
  • Which of these is an organism?
    11·1 answer
  • How successful was the NGP in influencing economic growth and development in South Africa
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!