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
Dmitry_Shevchenko [17]
3 years ago
15

Convert 1.88•10^-6g to milligrams

Chemistry
1 answer:
Vadim26 [7]3 years ago
8 0
The answer is 1.88·10^-3 mg. 
You might be interested in
To understand the relation between the strength of an acid or a base and its pKa and pKb values. The degree to which a weak acid
elena-14-01-66 [18.8K]

Answer:

pKa = 3.675

Explanation:

  • pKa = - Log Ka

∴ <em>C</em> X-281 = 0.079 M

∴ pH = 2.40

let X-281 a weak acid ( HA ):

∴ HA ↔ H+ + A-

⇒ Ka = [H+] * [A-] / [HA]

mass balance:

⇒<em> C</em> HA = 0.079 M = [HA] + [A-]

⇒ [HA] = 0.079 - [A-]

charge balance:

⇒ [H+] = [A-] + [OH-]... [OH-] is negligible; it comes from to water

⇒ [H+] = [A-]

∴ pH = - log [H+] = 2.40

⇒ [H+] = 3.981 E-3 M

replacing in Ka:

⇒ Ka = [H+]² / ( 0.079 - [H+] )

⇒ Ka = ( 3.981 E-3 )² / ( 0.079 - 3.981 E-3 )

⇒ Ka = 2.113 E-4

⇒ pKa = - Log ( 2.113 E-4 )

⇒ pKa = 3.675

8 0
3 years ago
Compare and contrast the Andes Mountains and the Rocky Mountains. How are they formed? What consumers and producers are in each?
Naily [24]

Answer:

ummm i need help too lol

Explanation:

7 0
2 years ago
Which is a function of a protein marcomolecule
Nutka1998 [239]
They function as catalysts, they transport and store other molecules such as oxygen, they provide mechanical support and immune protection, they generate movement, they transmit nerve impulses, and they control growth and differentiation
5 0
3 years ago
Read 2 more answers
What is the definition of particle in chemistry
scoray [572]
A particle is a minute fragment or quantity of matter. In the physical sciences, a particle is a small localized object to which can be ascribed several physical or chemical properties such as volume or mass. ... The term is rather general in meaning, and is refined as needed by various scientific fields.
7 0
3 years ago
What are diseases of Blood?
ad-work [718]
Blood disease, any disease of the blood, involving the red blood cells (erythrocytes), white blood cells (leukocytes), or platelets (thrombocytes) or the tissues in which these elements are formed-the bone marrow, lymph nodes, and spleen-or of bleeding and blood clotting.
Those were the notes my teacher gave me. Hope that helps!! : )
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is a chemical energy
    6·1 answer
  • What is the frequency of light that has a<br>wavelength of 244 pm?​
    5·1 answer
  • PLEASE HELP ME ASAP!!! <br> I need the answer to #9. If you can show work please do.
    7·1 answer
  • How many bromine atoms are present in 39.4 g of CH2Br2
    5·1 answer
  • Explain what air is, where on Earth it occurs, and how it moves to create wind.
    11·1 answer
  • Tin reacts with fluorine to form two different compounds, A and B. Compound A contains 38.5 g of tin for each 12.3 g of fluorine
    14·2 answers
  • What is the second most abundant element in stars? A. helium B. iron C. hydrogen D. oxygen
    7·1 answer
  • Are all elements created equal? Provide evidence for why or why not.​
    8·1 answer
  • What is the charge on an atom after it gains two electrons during the formation of a bond?
    5·1 answer
  • Please help me with this please help
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!