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
Zigmanuir [339]
3 years ago
13

Which statement is true of phenolphthalein?

Chemistry
2 answers:
Anna007 [38]3 years ago
5 0

The correct option is B.

Phenophtalein is an indicator that is usually used in acid base titration experiments. Indicators are substances that undergo distinct, observable changes when the pH of their solutions change. Indicators exhibit changing of colors depending on the pH of the solution in which they are found. They are usually weak bases and acid which are capable of partial dissociation and formation of ions when dissolved in water. There are different types of indicator and phenophtalein is one of them. Phenophtalein is colorless in acidic solution and pink in basic solutions.

Lesechka [4]3 years ago
3 0
B is the true statement

You might be interested in
What is the molar mass of magnesium chlorite (Mg(CIO2)2)?
sveticcg [70]
Hope this helps! 159.2086<span>Have a Good Day!</span>
4 0
3 years ago
The key enzyme in the regulation of the citric acid cycle is:.
bixtya [17]

The key enzyme in the regulation of the citric acid cycle is citrate synthase. It functions in the mitochondria.

<h3>Citrate synthase and cellular respiration </h3>

Cellular respiration is a series of reactions that produce ATP by using the energy stores in the chemical bonds of foods.

Cellular respiration is divided into glycolysis, the citric-acid cycle and oxidative phosphorylation.

Citrate synthase is an enzyme found in the mitochondrial matrix, which is involved in the citric acid cycle.

Learn more about cellular respiration here:

brainly.com/question/2809259

3 0
2 years ago
A gas occupies 800ml at a temperature of 27C. What is the volume at 132C?
pishuonlain [190]

V
1
​
/T
1
​
=V
2
​
/T
2
​

(900.0 mL) / (300.0 K) = (x) / (405.0 K); x = 1215 mL.

Change the 900 to 800, and the 300 to 27, then change the 405 to 132. And solve
3 0
3 years ago
If molar mass of M(OH)3 = 78 8. mass of M​
Cerrena [4.2K]

Answer:

From molar mass=total RAM of each individual element

78.8=(16+1)×3+M

78.8-51=M

27.8g/mol=M

5 0
2 years ago
Which discipline of Earth and space science is concerned with the study of the planets and stars?
sweet-ann [11.9K]

Answer:

The discipline of Earth and space science is concerned with the study of the planets and stars is

A. Astronomy

Explanation:

A.Astronomy:

'Astron' means stars and 'nomos' means laws. So astronomy is the study of stars , planets and space

B. biology

It is derived from Greek word : 'Bios' means life and 'logos' means study.

Biology is study of life, living organism ,structure of organisms,evolution

C.Geology

It is the earth science which includes the study of rocks and solid earth, what it is made of and how it has changed .

D. Oceanography

It is the study of physical and biological aspects of oceans

7 0
3 years ago
Other questions:
  • What compound is produced when cyclohexene is treated with concentrated KMnO4?
    14·1 answer
  • While in Europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per lite
    6·2 answers
  • What is a medium?
    6·2 answers
  • What is an an example of a chemical reaction?
    9·2 answers
  • 1.5<br> What is the purpose of adding sodium carbonate to the reaction mixture?<br> I
    7·1 answer
  • Summarize the arguments both for and against allowing genetically altered meats into the United States.
    6·1 answer
  • Which statement describes the components of a mixture?
    10·2 answers
  • Can someone help me please​
    9·1 answer
  • what is the purpose of making sodium extract for the detection of hetero elements in organic compond?​
    11·1 answer
  • You drop a rock weighing 23.2 g into a graduated cylinder that contains 55 mL. The level of the water rises to 62 mL. What is th
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!