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
Andrei [34K]
3 years ago
11

Why methylene blue is blue

Chemistry
1 answer:
bixtya [17]3 years ago
7 0

Methylene blue indicates the presence of oxidizing agents because it is oxidized itself by these compounds. When electrons are stripped from methylene blue, the resulting molecule imparts a blue color to the solution--giving a clear sign of a chemical change.

You might be interested in
An organism's _______ describes its genetic composition. An organism's _______ describes its appearance or observable characteri
harina [27]
I think it is C species and heredity
5 0
3 years ago
Calculate the molar mass of each of the following:
Allushta [10]

Explanation:

Molar mass

The mass present in one mole of a specific species .

The molar mass of a compound , can easily be calculated as the sum of the all the individual atom multiplied by the number of total atoms .

(a) S₈

Molar mass of of the atoms are -

sulfur, S = 32 g/mol.

Molar mass of  S₈ = 8 * 32 g/mol.  = 256 g/mol.

(b) C₂H₁₂

Molar mass of of the atoms are -

Hydrogen , H = 1 g/mol

Carbon , C = 12 g/mol

Molar mass of C₂H₁₂ = ( 2 * 12 ) + (12 * 1 ) = 36 g /mol

(c) Sc₂(SO₄)₃

Molar mass of of the atoms are -

sulfur, S = 32 g/mol.

oxygen , O = 16 g/mol.

scandium , Sc = 45 g/mol.

Molar mass of Sc₂(SO₄)₃ = (2 * 45 ) + ( 3 *32 ) + ( 12 * 16 ) = 378 g /mol  

(d) CH₃COCH₃ (acetone)

Molar mass of of the atoms are -

Carbon , C = 12 g/mol

oxygen , O = 16 g/mol.

Hydrogen , H = 1 g/mol

Molar mass of CH₃COCH₃ (acetone) = (3 * 12 ) + ( 1 * 16 ) + ( 6 * 1 ) = 58g/mol

(e) C₆H₁₂O₆ (glucose)

Molar mass of of the atoms are -

Carbon , C = 12 g/mol

oxygen , O = 16 g/mol.

Hydrogen , H = 1 g/mol

Molar mass of C₆H₁₂O₆ (glucose) = ( 6 * 12 ) + ( 12 * 1 ) + ( 6 * 16 ) = 108g/mol.

6 0
3 years ago
4. What is the difference between an open system and a<br> closed system?
Nimfa-mama [501]

Systems can exist in three ways as open systems, closed systems, and isolated systems. The main difference between open and closed system is that in an open system, matter can be exchanged with the surrounding whereas, in a closed system, matter cannot be exchanged with the surrounding.

btw why not just look it up on google? btw btw brainliest plz

5 0
3 years ago
Is this correct?<br> Plz answer ASAP!
Angelina_Jolie [31]

YES IT'S @LL CORRECT

3 0
3 years ago
Read 2 more answers
-3 × 4=? ....................​
blagie [28]

Answer:

-12

Explanation:

a negative times a positive is negative

8 0
3 years ago
Read 2 more answers
Other questions:
  • Deuterium on a periodic table?
    8·1 answer
  • In order for fission reactions to be successful, they must be self-perpetuating, meaning they must be able to keep themselves go
    5·1 answer
  • Limestone is composed almost entirely of calcite which has the chemical formula caco 3. As a result, limestone is classified as
    12·1 answer
  • Bright headlights show objects how far away
    6·2 answers
  • 125mm hg into atmosphere
    14·1 answer
  • Waves pass through earth layers​
    15·1 answer
  • Is the amount of
    7·1 answer
  • Solve and round to the correct number of significant figures: 129 ÷ 29.20
    11·1 answer
  • Which statement would support a merit of the Bronsted-Lowry base theory has over the Arrhenius base theory?
    6·2 answers
  • Waves transfer<br><br> A<br> density<br><br> B<br> energy<br><br> C<br> heat<br><br> D<br> matter
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!