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
disa [49]
3 years ago
13

What are the only elements that exist in nature as uncombined

Chemistry
1 answer:
mario62 [17]3 years ago
5 0

Answer:

The noble gases (Argon, Neon, Xenon, Helium, Krypton, Radon)

You might be interested in
Water molecules stick together by a force called?
patriot [66]

Answer:

Cohesion

Explanation:

Depending on how attracted molecules of the same substance are to one another, the substance will be more or less cohesive. Hydrogen bonds cause water to be exceptionally attracted to each other. Therefore, water is very cohesive.

8 0
3 years ago
Read 2 more answers
Emily learns that ancient astronomers, such as Ptolemy, created a model of the solar system based only on what they could see wi
sergey [27]

Explanation:

Galileo found Venus went through the entire phase cycle, proving that she revolved completely around the Sun, as predicted by Copernicus in his heliocentric model. ... The phases of Venus could not be explained by Ptolemy's Geocentric Model. Galileo knew that the Roman Catholic Church was incorrect.

7 0
2 years ago
You are looking at a flower with 5 petals, 5 sepals, 1 pistil, and 10 stamens. Is this a monocot or a dicot plant? -Need this AS
barxatty [35]
It is a monocot plant :)
6 0
3 years ago
Draw all resonance structures for the nitryl fluoride molecule, NO2F.(a) Explicitly draw all H atoms.(b) Include all valence lon
Dima020 [189]

Answer:

Resonance structures are represented in the picture below.

Explanation:

When there is a double pair of electrons shared between atoms in a molecule, the position of these electrons can be changed, without changing the molecule conformation. This occurs to stabilization, the electrons are relocated. These structures are called resonance structures.

In the molecule of NO₂F, nitrogen has 5 electrons in its valence shell, so it needs 3 electrons to be stable. Oxygen has 6 electrons and needs 2 to be stable, and fluor has 7 electrons and needs one electron to be stable.

Nitrogen still has electrons after the sharing, so it can also share one pair and will have a partial positive charge. One of the oxygens will not complete the octet, so will share only one pair f electron and will have a partial negative charge, that will compensate the positive charge in nitrogen.

The two resonance structures are shown below:

5 0
3 years ago
An 1.04-L sample of gas at 759 mm Hg pressure
telo118 [61]

PV = nRT

where P is the pressure,

V is the volume,

n is the moles of gas,

R is the gas constant,

and T is the temperature.

We must relate this equation to a sample of gas at two different volumes however. Looking at the equation, we can relate the change in volume by:

P1V1 = P2V2

where P1 is the initial pressure,

V1 is the initial volume,

P2 is the final pressure,

and V2 is the final volume.

Looking at this relationship, pressure and volume have an indirect relationship; when one goes up, the other goes down. In that case, we can use this equation to solve for the new pressure.

P1V1 = P2V2

(759 mm Hg)(1.04 L) = P2(2.24 L)

P2 = 352 mm Hg (rounded to three significant figures)

8 0
3 years ago
Other questions:
  • Sodium is produced by electrolysis of molten sodium chloride. what are the products at the anode and cathode, respectively?
    15·1 answer
  • What is a dark mysterious and non-nicotine mineral containing sample of a very common silicate? It's geology actually.
    7·1 answer
  • Which essential amino acid helps to alleviate insomnia and can be found in turkey?
    7·2 answers
  • (Please help!)
    10·1 answer
  • HELP PLEASE!!!!<br> Can someone answer it as a paragraph please I should submit it today
    8·1 answer
  • What is precipitate ​
    15·1 answer
  • What is this called? it might be sideways but it show look like a Y
    13·1 answer
  • Can someone please help me answer these questions and I’ll give you brainlest!!!!!
    9·1 answer
  • Calculate the density of sulfur dioxide gas (SO2) at 147°C and 29.9 kPa.
    13·1 answer
  • 8. How much heat, in kilojoules, is needed to produce 1850 grams of ammonia (NH3),
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!