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
Viktor [21]
2 years ago
12

Which is the most accurate description of compounds?

Chemistry
1 answer:
baherus [9]2 years ago
3 0

Answer: c.They have a unique set of properties that can be used as identifiers.

Explanation:

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.

Compounds can be decomposed into simpler constituents using chemical reactions.

Example: Water (H_2O)

2H_2O\rightarrow 2H_2+O_2

Compounds have different properties than the elements it is made up of.

Thus the most accurate description of compounds is that they have a unique set of properties that can be used as identifiers.

You might be interested in
What tool did scientist use to first study the Earth’s interior
IgorC [24]
Seismic waves hope this helps.
5 0
2 years ago
O tetraclorometano é um solvente muito utilizado na indústria de transformaç?o de produtos orgânicos ele é produzido pela reaç?o
Vlada [557]

Answer:

ΔHr = -103,4 kcal/mol

Explanation:

<u>Using:</u>

<u>AH° (kcal/mol) </u>

<u>Metano (CH) </u>

<u>-17,9 </u>

<u>Cloro (CI) </u>

<u>tetraclorometano (CCI) </u>

<u>- 33,3 </u>

<u>Acido cloridrico (HCI) </u>

<u>-22</u>

It is possible to obtain the ΔH of a reaction from ΔH's of formation for each compound, thus:

ΔHr = (ΔH products - ΔH reactants)

For the reaction:

CH₄(g) + Cl₂(g) → CCl₄(g) + HCl(g)

The balanced reaction is:

CH₄(g) + 4Cl₂(g) → CCl₄(g) + 4HCl(g)

The ΔH's of formation for these compounds are:

ΔH CH₄(g): -17,9 kcal/mol

ΔH Cl₂(g): 0 kcal/mol

ΔH CCl₄(g): -33,3 kcal/mol

ΔH HCl(g): -22 kcal/mol

The ΔHr is:

-33,3 kcal/mol × 1 mol + -22 kcal/mol× 4 mol - (-17,9 kcal/mol × 1 mol + 0kcal/mol × 4mol)

<em>ΔHr = -103,4 kcal/mol</em>

<em></em>

I hope it helps!

3 0
2 years ago
What is the density of CO gas if 0.196 occupies a volume of 100 no
shusha [124]
The density of CO gas if 0.196g occupies a volume of 100mL is0.00196g<span>mL or 0.00196 grams per milliliter</span>
3 0
3 years ago
A(n) ________ is a group of atoms that determines many of the properties of an organic molecule.
Leno4ka [110]
A functional group is a group of atoms that determines many of the properties of an organic molecule.
For example functional group for alcohol is hydroxyl group (-OH) and for carboxylic acid is <span>carboxyl group (-COOH).
</span>Alpha carbon is <span>the first </span>carbon<span> atom after the carbon that attaches to the functional group.</span>
4 0
3 years ago
Which orbital is the first to fill with electrons in a given principal energy level?
Mkey [24]

e) both s and p

hope this helps!

5 0
3 years ago
Read 2 more answers
Other questions:
  • Methylhydrazine, CH6N2, is commonly used as a liquid rocket fuel. The heat of combustion of methylhydrazine is −1.30 × 103 kJ/mo
    9·1 answer
  • Plz answer #4 <br><br> Best answer will get BRAINLIEST!!!
    9·2 answers
  • Selected properties of antimony (Sb) and iodine (I) are listed in the table below. Element Atomic radius (pm) First ionization e
    12·2 answers
  • The reaction below demonstrates which characteristic of a base?
    14·2 answers
  • in a Grignard reagent, the carbon bonded to the magnesium has a partial ________ charge, because carbon is ________ electronegat
    14·1 answer
  • What do you think the biggest risk with genetic engineering is?
    15·1 answer
  • What is the hydrogen ion concentration of 0.450M solution of acetic acid (HC2H3O2), if the ionization constant(Ka) is 2.19 x 10-
    7·1 answer
  • Atomic weight and atomic number of an element is 35 and 17 respectively<br>​
    13·1 answer
  • Type the correct answer in each box.
    6·1 answer
  • Carbon exists in nature as three isotopes. Given the atomic masses and relative abundance of the isotopes, what is the average a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!