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
IgorLugansk [536]
3 years ago
10

Một hỗn hợp X gồm CH3OH; C2H5OH; phenol có khối lượng 28,9 gam phản ứng vừa hết với 100ml dung dịch NaOH 2M. Phần trăm theo khối

lượng phenol là ? Biết C = 12; O = 16; H = 1; Na = 23. *
Chemistry
1 answer:
slavikrds [6]3 years ago
3 0

Answer:

nNaOH = 0,2 mol

Trong hỗn hợp các chất đề bài cho chỉ có phenol tác dụng với NaOH

C6H5OH + NaOH → C6H5ONa + H2O

   0,2  ←     0,2 (mol)

⟹ mphenol = 0,2.94 = 18,8 gam

⟹  

%mC6H5OH=18,8/28,9 x100%= 65,05%

Explanation:

You might be interested in
In which state of matter has least amount of kinetic energy
jeyben [28]
The answer is Solid.

Have a great day m8!
3 0
3 years ago
Read 2 more answers
How do I draw energy level diagrams?
finlep [7]

Energy levels inside an atom are the specific energies that electrons can have when energy occupies specific orbitals. Electrons can be excited to higher energy levels by absorbing energy from the surroundings, an equivalent light is emitted when an electron returns from a high energy state to a lower one. Representation of this diagrammatic is known as the energy level diagram.

7 0
2 years ago
Plot the data points on the graph below and use the corresponding dot colors: 1st data point - blue, 2nd data point - yellow, 3r
yulyashka [42]

Answer:

The answer is an attached file

Explanation:

I hope it'll be useful to you.

4 0
3 years ago
Read 2 more answers
Consider this reaction: KOH + HBr - KBr + H20<br> Which statement is most likely true about HBr?
Roman55 [17]

Answer: It turns blue litmus red

Explanation:

I just got it right on edge

7 0
3 years ago
Read 2 more answers
Please help, need asap, just tell me where they go​
Lostsunrise [7]

Answer:

1 to 2 3 to 6

Explanation:

5 0
3 years ago
Other questions:
  • Calculate 50g 25.0c to 95.000<br>O.897 J / (g.c)​
    12·1 answer
  • Write a balanced chemical equation for the synthesis of ammonia from its elements including the word energy as a product
    13·1 answer
  • Which statement describes how this graph would change if the reaction could be made to go faster?
    7·1 answer
  • What is a measurement of the amount of solute that is dissolved in a given quantity of solvent?
    8·2 answers
  • All forms of energy can be converted into any other form. TrueFalse
    13·2 answers
  • Which protein transports water-insoluble lipids in the bloodstream?
    13·1 answer
  • El plomo y el yodo forman dos compuestos. En uno, el porcentaje de en masa de plomo es del 44,94% y en el otro es de 62,02%. Cal
    9·1 answer
  • Scientific notation is a way of writing very large or very small
    11·1 answer
  • Help pls I will answer some of ur social studies questions!!!
    9·2 answers
  • A world with both liquid water on its surface and carbon dioxide in its atmosphere is unstable because.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!