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
Kisachek [45]
3 years ago
13

I need help asap please help me

Chemistry
1 answer:
lana [24]3 years ago
4 0

Answer:

the answer is the third one the beak

You might be interested in
Trichloroacetic acid (HC2Cl3O2) is a corrosive acid that is used to precipitate proteins. The pH of a 0.072 M solution of trichl
Archy [21]

Answer:

Explanation:

HCl is strong acid, hence 0.04M of acid

= 0.057 M of H+

pH = -log [H+]

= -log [0.057]

= 1.244

Let the dissociation of trichloroacetic acid be:

HClO4 --> H^+ + ClO4^-

HA --> H+ + A-

0.072 - x x x

[H+] = 0.057 M

[HA] = 0.072 - 0.057

= 0.015 M

[H+] = [A-] = 0.057

Ka = [H+][A-]/[HA]

= (0.057^2)/(0.015)

= 0.217

= 0.22.

5 0
3 years ago
What branch of chemistry studies the flow of electrons?
grin007 [14]

Answer:

Your answer is B, Electrochemistry!

Explanation:

This is the part of chemistry that studies the chemical process in which electrons flow. This flow is called electricity. Electricity is generated by the flow of electrons, from one element to another element. This reaction is called oxidation reduction.

6 0
2 years ago
1. In any nuclear reaction, nuclei are transformed in some way.
Grace [21]
<span>1. In any nuclear reaction, nuclei are transformed in some way.

True

2. Two fissionable substances commonly used in nuclear reactors and nuclear weapons include uranium-235 and plutonium-239.

True

3. Fission reactions can be controlled; thus, they are used to create energy and electricity. But fusion reactions are uncontrollable and require too much energy for economical use.

True

4. Fission reactions occur at such high temperatures in the Sun that the Sun appears to glow.

False

Hope this answers the question. Have a nice day.</span>
4 0
3 years ago
Read 2 more answers
In the given range,at what temperature does oxy gen have the highest solubility?​
strojnjashka [21]
Water solubility of oxygen at 25oC and pressure = 1 bar is at 40 mg/L water. In air with a normal composition the oxygen partial pressure is 0.2 atm. This results in dissolution of 40 . 0.2 = 8 mg O2/L in water that comes in contact with air.
6 0
3 years ago
Read 2 more answers
Where is the intersection of the position and time axes located on a position-versus-time graph?
Bad White [126]

it is located at the origin so A

hope this helped ^_^

5 0
3 years ago
Other questions:
  • What’s the difference between the three types on natural radioactivity
    10·1 answer
  • Can you tell the difference between an element and compound by measuring mass and volume?
    14·1 answer
  • When the name of an anion that is part of an acid ends in -ite , the acid name includes the suffix _____.
    15·2 answers
  • What is the length of the hypotenuse x if (12,35,x) is a Pythagorean triple
    6·2 answers
  • Which of the following ions is a polyatomic ion?
    14·1 answer
  • How many moles of Oxygen atoms are contained in 45.9 mol CO2?
    13·1 answer
  • How much potassium iodide to take for radiation protection.
    13·1 answer
  • How many grams of Cl2 are in 0.345L at STP?
    15·1 answer
  • Read the chemical equation.
    10·1 answer
  • Those 2 Question say...
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!