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
Paul [167]
3 years ago
11

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:
inn [45]3 years ago
5 0

Answer: bạn viết phương trình Phenol + NaOH

=> nNaOH = nPhenol = 0,2 mol

m Phenol = 0,2x94 = 18,8 gam

%mPhenol = 18,8/28,9% = 65,05

Explanation:

You might be interested in
A student looking for an element that will bond with sodium (Na) knows that table salt is a compound of sodium and chlorine (Cl)
devlian [24]

Based on the information on the student looking for an element that will bond with sodium, the element that will likely bond with sodium is bromine.

<h3>How do elements bond?</h3>

Elements bond with one another in a chemical manner to form compounds, which cannot be broken down into their constituent elements without being destroyed.

According to this question, a student is looking for an element that will bond with sodium (Na) with the knowledge that table salt is a compound of sodium and chlorine (Cl).

This suggests that an element that will likely bond with sodium must be in the same group with chlorine because they will possess the same chemical properties.

Therefore, based on this information, the element that will likely bond with sodium is bromine.

Learn more about element at: brainly.com/question/13025901

#SPJ1

8 0
2 years ago
The balloon Spirit of Freedom, flown around the world by American Steve Fossett in 2002, contained 550,000 cubic feet of helium.
Elodia [21]
Assuming the balloon initially has volume of 0 when deflated, the total P(deltaV) = (1.00 atm)(550,000 ft^3) = 550,000 atm-ft^3. To convert into work units, we can first convert ft^3 to L:
(550,000 atm-ft^3)(1 m/3.28 ft)^3
= (15,586.2 atm-m^3)
Then we convert to L:
(15,586.2 atm-m^3)(1000 L/m^3)
= 15,586,200 atm-L
Then we convert to J:
(15,586,200 atm-L)(101.325 J / 1 atm-L)
= 1.579 x 10^9 J
3 0
3 years ago
Question 3 (1 point)
bija089 [108]

Answer:

Im pretty sure its B

Explanation:

6 0
3 years ago
Read 2 more answers
The top is an example problem the bottom one is the one i need help with. I only need C,D, and E please help
velikii [3]

Answer:

correct

Explanation:

makes sense just re-write!

5 0
3 years ago
Read 2 more answers
Which of these expressions are correct variations of the combined gas law?
victus00 [196]
The combines law of gas is:

P1 * V1     P2 * V2
---------- = -----------
    T1           T2

So, you can obtain many equivalent valid forms depending on the variable that you solve for.

These are some examples:

Solve for T1:

T1 = T2 * (P1 * V1) / (P2 * V2)

Solve for V2:

V2 = V1 * (T2 / T1) * (P1 / P2)

Solve for P1:

P1 = P2 * (T1 / T2) * ( V2 / V1)
3 0
4 years ago
Read 2 more answers
Other questions:
  • The basic points in Lewis and Langmuir theory of electrovalency
    5·1 answer
  • If an acid and a base react, the product(s) will be _____. a salt neutral water a salt and water a metal and water
    7·2 answers
  • What is the product of the second alpha decay in this series
    15·1 answer
  • The components of a true solution blend to form new properties. <br> a. True<br> b. False
    6·1 answer
  • What happens to the nutrients absorbed in the<br> small intestine?
    13·1 answer
  • How many centimeters are there in 35,000 micrometers?<br><br> Please and thank you
    15·2 answers
  • Which element has a higher first ionization energy than carbon
    9·1 answer
  • If a=1/2(a+b)h,express a in terms of A,b and h. pls solve with step by step ​
    15·1 answer
  • A 0.175 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.27° in a 1-dm sample
    10·1 answer
  • Plz i need help<br> eggs:<br> ranch dressing<br> windex
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!