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
Montano1993 [528]
3 years ago
13

Identify the compound. Which of these is a compound?

Chemistry
2 answers:
STatiana [176]3 years ago
8 0

Answer: Image 3 is a compound.

Explanation: A compound is something that consists of two or more  different elements bonded chemically.

A molecule is formed when two or more elements combine chemically.

An element is described as something which cannot be broken down by any chemical means.

We are given 4 images.

Image 1 is an element as it is showing the shell structure of Oxygen (O) element.

Image 2 is an element as only 1 element is known that is Magnesium (Mg).

Image 3 is a compound as in the structure 2 elements are shown which is bonded together. Elements present in this are Carbon (C) and Oxygen (O).

Image 4 is a molecule as in the structure 2 H-atoms combine chemically, but it cannot be considered as compound as the two elements are not different.

Bond [772]3 years ago
7 0
The answer has to be either CO2 or mg. But i am not sure which one 
You might be interested in
Which of the following is NOT a renewable energy source?
scoundrel [369]
I think Geothermal but I’m not 100% sure
3 0
3 years ago
Read 2 more answers
For double-helix formation, DG can be measured to be 2 54 kJ mol 1 ( 2 13 kcal mol 1 ) at pH 7.0 in 1 M NaCl at 25 8C (298 K). T
levacccp [35]

Answer:

ΔS = -661.0J/mol is the entropy change for the system

ΔS = -842J/mol.K is the entropy change for the surroundings

Explanation:

From the relationship between ΔG, T, ΔH and ΔS,

Mathematically, ΔG = ΔH - TΔS

TΔS = ΔH - ΔS

ΔS = ΔH - ΔS / T

but ΔG = -54 kJ/mol, ΔH = -251 kJ/mol and T = 25 °C (298 K)

plugging into the equation,

ΔS = -251 kJ/mol - ( -54 kJ/mol) / 298

ΔS  = -0.6610KJ/mol or in J.mol

ΔS = -661.0J/mol is the entropy change for the system

  • For entropy change for the surroundings = ΔS = ΔH/T
  • ΔS  = -251 kJ/mol / 298K
  • ΔS = -0.84KJ/mol.K or -842J/mol.K is the entropy change for the surroundings
8 0
3 years ago
In the sentence "After conducting the science experiment,we recorded and analyzed the results," what does the word conducting me
gulaghasi [49]
Anything related to the word "performing/conducting"
4 0
4 years ago
Read 2 more answers
Hat happens when an atom gains an electron?
Aliun [14]
A) It becomes a negative ion
7 0
3 years ago
What is the mass, in grams, of 0.000142 mol of vitamin C?
tatiyna

Answer:

0.0250 g

Explanation:

176.12 g/mol* 0.000142 mol =0.0250 g

6 0
3 years ago
Other questions:
  • Given the unbalanced reaction: P₄+ O₂ <img src="https://tex.z-dn.net/?f=%5Crightarrow" id="TexFormula1" title="\rightarrow" alt=
    7·1 answer
  • Draw the product that is formed when the compound shown below is treated with an excess of hydrogen gas and a platinum catalyst.
    14·1 answer
  • fluorine is a toxic, reactive gas. which representation (structural formula, electron dot structure, or three-dimensional model)
    13·1 answer
  • How do you know which element is the most reactive in the periodic table?
    5·1 answer
  • Acid-catalyzed dehydration of an alcohol is an equilibrium situation. How was the reaction forced to completion in Acid-Catalyze
    9·1 answer
  • Convert 236 mg MgP207 to moles. Use three significant figures in your answer.​
    6·1 answer
  • A 19.45 gram sample of copper is heated in the presence of excess iodine. A metal iodide is formed with a mass of 58.30 g. Deter
    10·1 answer
  • Elements in the same period have _____.
    11·2 answers
  • Classify matter as elements mixtures and compounds
    12·1 answer
  • What is the difference between the number of electrons in an atom of tin (Sn) and the number of electrons in an atom of oxygen (
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!