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
larisa [96]
3 years ago
6

Which of these is an element? A. carbon B. carbon dioxide C. air D. water

Chemistry
2 answers:
Sloan [31]3 years ago
8 0
I think it's B carbon dioxide
Kaylis [27]3 years ago
4 0
Elements are pure substances. Carbon is the only one that is pure.
You might be interested in
Which of the following are Cations? (Select all that apply)
AleksandrR [38]

Answer:

k(+)

NH4(+)

Al3(+)

Explanation:

cations are those elements who donate their electrons and we put a positive charge on it and receivers get negative charge and they are called anion.....Thank you so,much Please let me know how you feel and is helps you or not....

5 0
2 years ago
A gas at 1.5 atm had pits ressure decreased to 0.50 atm producing a new volume of 750 ml what was its original volume
Vlada [557]

Answer:

The original volume of the gas is 0.001 mL

Explanation:

This easy excersise can be solved by the law for gases, about pressure and volume; the volume of a gas is inversely proportional to the pressure it exerts.

We can propose the rule by this formula:

P₁  / V₁ = P₂ / V₂

We replace data given: 1.50 atm / V₁ = 0.50 atm / 750 mL

As the rule says, that volume is inversely proportional, and the pressure was decreased, volume must be lower than 750 mL.

1.5atm / (0.5 atm / 750mL) = V₁

V₁ = 0.001 mL

6 0
3 years ago
Multiple covalent bonds may occur in atoms that contain carbon,nitrogen, or
Arisa [49]

Answer: Multiple covalent bonds may occur in atoms that contain carbon,nitrogen, or  <u><em>oxygen</em></u>.

8 0
3 years ago
When temperature drops, (for example from 20 degrees celsius to 10 degrees celsius)
AnnZ [28]
The answer should be B !
7 0
3 years ago
Read 2 more answers
Compare and contrast heat waves and cold waves
poizon [28]
Ok they are both can formed by the same high pressure system . the heat waves are extended periods of above-normal temperatures . but the cold wave is an extended periods of below normal temperatures
7 0
3 years ago
Other questions:
  • In which of the following atoms are valence electrons in the lowest average potential energy states?
    10·1 answer
  • Sodium hydrogen carbonate decomposes above 110°c to form sodium carbonate, water, and carbon dioxide. 2nahco3(s) na2co3(s) + h2o
    10·1 answer
  • How are lactic and alcoholic fermentation similar?
    13·1 answer
  • Which of the followings are true 1,3-BPG? A. It regulates Hb B. It contains a high-energy bond C. It contains two ester bonds D.
    7·1 answer
  • Ammonia, NH3NH3 , can react with oxygen to form nitrogen gas and water. 4NH3(aq)+3O2(g)⟶2N2(g)+6H2O(l) 4NH3(aq)+3O2(g)⟶2N2(g)+6H
    11·1 answer
  • Which ion will oxidize Fe? 1) Zn+2 2)Ca+2 3) Mg+2 4) Cu+2
    8·1 answer
  • A chemist dissolves 614. mg of pure hydrochloric acid in enough water to make up 400 mL of solution. Calculate the pH of the sol
    13·1 answer
  • Energy is converted from solar to chemical in Process A and then from one form of chemical to another in Process B. What is Proc
    9·1 answer
  • Assuming that the bath contains 250.0 g of water and that the calorimeter itself absorbs a negligible amount of heat, calculate
    6·1 answer
  • Calculate the concentration of the rubidium hydroxide solution in g dm³. (relative atomic mass: Rb = 85; relative formula mass:
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!