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
podryga [215]
3 years ago
11

How many mol of sodium corresponds to 1.0 x 10^15 atoms of sodium?

Chemistry
2 answers:
Nataly [62]3 years ago
8 0

Answer:

The moles of sodium are 1.6606\times 10^{-9} moles.

Explanation:

Moles of sodium = n

Number of atoms of sodium , N = 1.0\times 10^{15}

N=n\times N_A

Where ,N_A= 6.022\time 10^{23} mol^{-1} atoms/ molecules (Avogadro number)

n=\frac{N}{N_A}=\frac{1.0\times 10^{15}}{6.022\time 10^{23} mol^{-1}}

n = 1.6606\times 10^{-9} moles

The moles of sodium are 1.6606\times 10^{-9} moles.

andrew-mc [135]3 years ago
3 0
The Avogadro number represents the number of units in one mole of a chemical substance.
So to find the mole number of a chemical element, you divide its atom number of the Avogadro number which Na = 6.02*10^23 approx.
So n=N/Na (n=mole number, N=number of atoms, Na=Avogadro number)
n=1.0*10^15/6.02*10^23
n=1.6 * 10^-9

So 1.0*10^15 atoms of Sodium represent 1.6*10^-9 mol.

Hope this Helps! :)
You might be interested in
What is the best definition
Ann [662]

Answer:

B.

Explanation:

thermal expansion♡

7 0
1 year ago
Read 2 more answers
48g of 02 produce how many grams of Al2O3
bixtya [17]

Taking into account the reaction stoichiometry,  102 grams of Al₂O₃ are formed when 48 grams of O₂ react.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

4 Al + 3 O₂  → 2 Al₂O₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

  • Al: 4 moles
  • O₂: 3 moles
  • Al₂O₃: 2 moles

The molar mass of the compounds is:

  • Al: 27 g/mole
  • O₂: 32 g/mole
  • Al₂O₃: 102 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

  • Al: 4 moles ×27 g/mole= 108 grams
  • O₂: 3 moles ×32 g/mole= 96 grams
  • Al₂O₃: 2 moles ×102 g/mole= 204 grams

<h3>Mass of Al₂O₃ formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 96 grams of O₂ form 204 grams of Al₂O₃, 48 grams of O₂ form how much mass of Al₂O₃?

mass of Al_{2} O_{3} =\frac{48 grams of O_{2} x204 grams of Al_{2} O_{3}}{96 grams of O_{2}}

<u><em>mass of Al₂O₃= 102 grams</em></u>

Finally, 102 grams of Al₂O₃ are formed when 48 grams of O₂ react.

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

#SPJ1

3 0
1 year ago
A 2g sample of crystals dissolve very slowly in 100mL of water while the water is stirred. Which of these would cause the crysta
liraira [26]
The stirring breaks it up faster, the amount of water doesn’t effect it, it just gives it space to spread/dissolve - I think.
7 0
2 years ago
The Diameter of a chlorine atom is 200. Pm. How many chlorine atoms are required to line up end to end to stretch a distance of
Artist 52 [7]
Diameter = 200pm
200pm -> mm
200pm *^-12 / 1*10^-3 = .0000002
2.0*10-7x mm = 1.0mm
Divide x on both sides

6 0
3 years ago
Read 2 more answers
How can scientists know what happened millions of years ago if no one was there to see it?​
xxMikexx [17]

Answer:

In the 150 years since Darwin proposed the theory of evolution by natural selection, a mountain of evidence has accumulated ... How can you know what happened millions of years ago if no one was there to see it? Evidence and observation are the building blocks of all scientific inquiry; evolutionary science is no different

Explanation:

4 0
3 years ago
Other questions:
  • What is the purpose of DNA? A) manufactures proteins Eliminate B) reduces activation energy C) stores hereditary information D)
    10·2 answers
  • What state of matter is flubber is it a solid,liquid,or gos?
    12·1 answer
  • 5. Which of the following statements about the modern
    6·1 answer
  • The molar mass of an element is the mass of one
    7·1 answer
  • How many moles are in 48.0g of H2O2?
    8·1 answer
  • HELP ASAP
    15·1 answer
  • Which molecular compound is composed of the greatest number of atoms?
    12·1 answer
  • Light-dependent reactions: ​
    10·1 answer
  • In the following neutralization reaction 2CsOH(aq) H2SO4(aq), the salt produced will be _______________
    8·1 answer
  • When pcl5 solidifies it forms pcl4 cations and pcl6–anions. according to valence bond theory, what hybrid orbitals are used by p
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!