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kykrilka [37]
3 years ago
15

________ properties can be observed only when the substance in a sample of matter are changed into different substances

Chemistry
1 answer:
RUDIKE [14]3 years ago
5 0
I believe it's Chemical properties
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1. What is the wavelength of a photon of light with a frequency of 6.10 x 10^15 Hz?
Blababa [14]

Answer:

0.000000000000005 mm

Explanation:

6 0
3 years ago
Nitrobenzene contains 5 hydrogen atoms, 6 carbon atoms, 2 oxygen atoms, and 1 nitrogen atom. what is the chemical formula for ni
ollegr [7]

C₆H₅NO₂

<h3>Further explanation</h3>

Nitrobenzene contains:

  • 5 hydrogen atoms,
  • 6 carbon atoms,
  • 2 oxygen atoms, and
  • 1 nitrogen atom.

The chemical formula for nitrobenzene is C₆H₅NO₂.

Nitrobenzene is one of benzene derivatives, precisely including the type of monosubstituted benzenes.

The molecular structure of phenyl  \boxed{ \ C_6H_5- \ } is formed by removing one H atom from the benzene \boxed{ \ C_6H_6 \ } molecule. A substituent is bound to the C atom which loses the H atom so it is called monosubstituted benzene.

In the naming of monosubstituted benzenes, benzene is the parent name and the substituent is indicated by a prefix.

  • nitro is the substituent
  • benzene is the parent name

When benzene is reacted with a mixture of concentrated nitric acid and concentrated sulfuric acid, it yields nitrobenzene.

\boxed{ \ C_6H_6 + HNO_2 \ (with \ H_2SO_4 \ in \ 30^0C-40^0C) \rightarrow C_6H_5NO_2 + H_2O}

- - - - - - -

<u>Notes:</u>

  • Benzene and compounds having similar chemical properties to benzene are called aromatic compounds.
  • Benzene is a colorless, poisonous liquid with a specific odor. it dissolves in organic solvents in organic solvents such as alcohol, ether, and acetic acid. Benzene is also good for non-polar substances.
  • Nitrobenzene is used in the manufacture of aniline and other organic chemicals. Nitrobenzene is a pale yellow, oily, and highly toxic liquid with the odor of bitter almonds.
<h3>Learn more</h3>
  1. Calculating the pH value of weak base brainly.com/question/9040743
  2. About the solution as a homogeneous mixture  brainly.com/question/637791
  3. About the mass and density of substances  brainly.com/question/4053884

Keywords: nitrobenzene, contains, 5 hydrogen atoms, 6 carbon, 2 oxygen, and 1 nitrogen. the chemical formula, benzene, monosaturated, phenyl, aromatic compounds

7 0
3 years ago
Read 2 more answers
Hydrogen bonds are:
bekas [8.4K]

Answer:

The answer to your question is: letter C

Explanation:

a. the sharing of electrons between a hydrogen atom and another atom.  This description is not for hydrogen bonding, in hydrogen bonding atoms do not share electrons, to form this bond.

b. the electrostatic interaction between an atom that has lost an electron and an atom that has gained an electron.  This definition is describing an ionic bonding, not a hydrogen bonding.

c. the interaction between a hydrogen atom covalently bonded to an electronegative atom and another electronegative atom. This is the right definition of hydrogen bonding, because is mentioning the interaction between a hydrogen and an electronegative atom.

4 0
3 years ago
Which would show an example of how physical changes are reversible?
dolphi86 [110]
C because it’s reshaping it, it stays the same but just reshaping it
6 0
3 years ago
An area of high air pressure is caused by _____.
DedPeter [7]
Not totally sure, but I think it’s A.
7 0
3 years ago
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