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
Ivahew [28]
3 years ago
8

Which statement best describes a mole ?

Chemistry
2 answers:
pentagon [3]3 years ago
5 0
<span>
It contains 6.02 mc001-1.jpg 1023 grams of sodium chloride.

It is the mass of 12 carbon atoms.

It contains 6.02 mc001-2.jpg 1023 particles of a given substance.</span>
Alex777 [14]3 years ago
3 0

It contains 6.02 1023 particles of a given substance.

You might be interested in
How many of the following molecules are polar? Pcl5 cos xeo3 sebr2
klasskru [66]

Answer:

<em>Three (3) of the molecules are polar: </em>CoS,<em> </em>XeO_{3},<em> </em>SeBr_{2}<em>.</em>

Explanation:

Polar substances have their elements held together by a covalent bond that contain partially positive and negative charges, which results in a difference in the charges' electronegativity difference (usually ranging between 0.4 and 0.7).

  • PCl5 is <u>non-polar</u> with a symmetric geometry
  • CoS is <u>polar</u>
  • XeO3 is <u>polar</u>, with a trigonal pyramidal molecular geometric
  • SeBr2 is <u>polar</u> as the difference their electronegativity is about ).5
5 0
3 years ago
1. Water is easily contaminated by both biological and chemical contaminants. Define and give 3 examples of each
tamaranim1 [39]
Are there options like A,B,C,D?

7 0
3 years ago
The amount of water vapor in the air, compared to the maximum amount that can be held at a specific air temperature is called:
Lisa [10]

Answer: D relative humidity

Explanation: Just took the test.

3 0
3 years ago
Is combining water and powdered drink mix a chemical reaction?
VikaD [51]

Answer:

No, it's a physical reaction.

Explanation:

A chemical change produces new chemical compounds, but combining water and powder is just mixing the powder with the water. It's not a new compound.

I don't know how to really explain, sorry :)

3 0
2 years ago
To three significant digit,what is the mass percentage of iron in the compound Fe2O3​
svlad2 [7]

69.9%

Explanation:

To find the mass percentage of iron in the compound in Fe₂O₃, we would go ahead to express the given molar mass of the iron to that of the compound.

 Mass percentage  = \frac{molar mass of Fe}{Molar mass of Fe_{2}O_{3}  }  x 100

Molar mass of Fe = 55.85g/mol

Molar mass of O = 16g/mol

Molar mass of Fe₂O₃ = 2(55.85) + 3(16) = 159.7‬g/mol

Mass percentage  = \frac{2(55.85)}{159.7}  x  100   = 69.94% = 69.9%

learn more:

Mass percentage brainly.com/question/8170905

#learnwithBrainly

4 0
3 years ago
Other questions:
  • Tell why small droplets of water on an oily surface are almost spherical.
    14·1 answer
  • 48.5 moles of P4O10 contains how many moles of P
    9·2 answers
  • Which compound is soluble in water?(1) PbS (3) Na2S(2) BaS (4) Fe2S3
    11·1 answer
  • The chemical equation below shows the reaction between carbon dioxide (CO2) and lithium hydroxide (LiOH). CO2 + 2LiOH mc011-1.jp
    13·2 answers
  • Please use the values in the resources listed below instead of the textbook values. Under certain conditions the decomposition o
    14·1 answer
  • If the above two waveforms were sound waves, we would hear the ___________ wave louder. If the above two waveforms were light wa
    15·2 answers
  • ________ are __________ for inherited traits. <br> PLSS ANSWER ASAP I BEG
    15·1 answer
  • How many atoms are in 0.909 moles of silver?
    11·1 answer
  • What happens to the temperature of a liquid as it is cooled beyond its freezing point?
    8·1 answer
  • Indicate whether each of the following gas liquid solid 1: the neon atoms in living display don't interact with other
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!