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
Lubov Fominskaja [6]
3 years ago
13

Is O2 a compound or a molecule?

Chemistry
2 answers:
bija089 [108]3 years ago
7 0

Answer:

Oxygen in the atmosphere is a molecule because it contains molecular bonds. It is not a compound because it is made from atoms of only one element

igor_vitrenko [27]3 years ago
5 0

Answer:

Oxygen is an element. A compound is two or more elements chemically combined. A mixture is two or more elements physically combined (ie. ... Oxygen gas is made of molecules containing only oxygen

Explanation:

You might be interested in
Hello guys sorry for spamming again but I have to do this whole thing and the end of trimester for my school is today so I need
Aloiza [94]

Answer:

all you need if yo look up and say do plants grow without soil but yes they can grow without soil but they cannot grow without the necessities that soil provides.

4 0
3 years ago
Which distinguishes a dwarf planet from a planet?
Rashid [163]

Answer:

It's size

Explanation:

The definition of a dwarf planet is "a celestial body that orbits the sun and has a spherical shape but is not large enough to disturb other objects from its orbit"

Essentially, "dwarf" is an adjective. Just like saying the colour distinguishes a purple planet...

6 0
3 years ago
Read 2 more answers
A solution contains one or more of the following ions: Ag+, Ca2+, and Co2+. Lithium bromide is added to the solution and no prec
Deffense [45]

Answer:

1. Ag+ precipitates. 2. Ca2+ precipitates. 3. Co2+ precipitates.

Explanation:

First AgBr is formed which is practically insoluble in water. CaBr2 and CoBr2 are soluble.

Then precipitates CaSO4. CoSO4 is soluble.

And then precipitates Co2(PO4)3 which is insoluble.

4 0
4 years ago
An aqueous solution of ammonia is found to be basic. This observation can be explained by the net ionic equationHNO3(aq) + H2O(l
jeka57 [31]

Answer:

NH_3_{(aq)}+H_2O_{(l)}\rightarrow NH_4^+_{(aq)}+OH^-_{(aq)}

Explanation:

Bases are the species which furnish hydroxide ions in the solution or is capable of forming bonds with electron deficient species as they are electron rich species. When a base accepts a proton, it changes into a acid which is known as its conjugate acid.

Net ionic equation : In the net ionic equations, we are not include the spectator ions in the equations.  Only the species which are present in aqueous state dissociate. So, the net ionic equation of aqueous solution of ammonia is shown below as:-

NH_3_{(aq)}+H_2O_{(l)}\rightarrow NH_4^+_{(aq)}+OH^-_{(aq)}

6 0
3 years ago
A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase,
klemol [59]
Efficiency is defined as the measure of the amount of work or energy is conserved in a certain process. At all times, in every process, work or energy is always lost or wasted due to certain interference. Not all work given is converted to useful work or energy. Thus , efficiency is calculated by dividing the energy or work output to the energy or work input then the value is multiplied by 100 to express efficiency as percentage.

Efficiency = work output / work input Efficiency = (1540 J / 1600 J) x 100= 96.25%
Thus, the answer is B.
3 0
4 years ago
Read 2 more answers
Other questions:
  • A sample has a hydrogen ion concentration of 1 ⋅ 10^−2. What happens if the hydrogen ion concentration increases?
    11·1 answer
  • How does a lithium cation compare to a lithium atom?
    13·2 answers
  • Why do rocks have different color stripes
    10·1 answer
  • A student carries out the same titration but uses an indicator instead of a pH meter. If the indicator changes color slightly pa
    15·1 answer
  • List the gases h2o, he, hcl, brf, and no2 in order of increasing average molecular velocity at 25◦c. 1. rates of effusion: no2 &
    8·1 answer
  • Volcanoes can change the surface of the Earth by
    11·1 answer
  • Which is the best way to define wind?
    5·1 answer
  • The maximum solubility of Ag2CO3 in 0.02<br>M Na2CO3 is (Ksp of<br>Ag2003 is 8 x 10-12)<br>​
    11·1 answer
  • Choose all of the secondary sources used by humans for energy !!
    6·1 answer
  • Someone please answer quick. <br><br> How many molecules are in 5.5 mol of a ZnCL2 sample
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!