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
valentina_108 [34]
3 years ago
10

How many moles are in 12.013 x 10 ^24 atoms of helium?

Chemistry
1 answer:
Alex17521 [72]3 years ago
7 0

Answer:

19.948 mol.

Explanation:

  • <em>Knowing that every one mole of a substance contains Avogadro's no. of molecules (NA = 6.022 x 10²³).</em>

<u><em>Using cross multiplication:</em></u>

1.0 mole → 6.022 x 10²³ atoms of He.

??? mole → 12.013 x 10²⁴ atoms of He.

∴ The no. of moles of are in  12.013 x 10²⁴ atoms of He = (12.013 x 10²⁴ atoms of He) (1.0 mole) / (6.022 x 10²³ atoms of He) = 19.948 mol.

You might be interested in
HELP MEEEE ASAP PLEASEEEE !!!!!!!!
jasenka [17]

Ok, I will help you answer but it is very hard to read could you enlarge it first?

Thanks!

5 0
3 years ago
How many polar bonds are found in this molecule
Law Incorporation [45]
A bond is non polar if it is between same atoms and polar if it is between different atoms.

Same atoms are like two dogs of same strength pulling a bone towards towards each other. But when it’s different atoms it’s like a big dog and small dog then the bone is more towards bigger dog. So it’s the same way in bonds.

Bonds are made up of electrons, when the more stronger pulling atom is present than other the electrons are more towards it and as a result we have polar bond. There is development of a kind of a negative pole and a positive pole.

The stronger atom has electrons towards itself so it has a little more negative charge while the other atom has positive charge. This makes bond polar.

So just look for bond between two different atoms, it would be polar.

Look at the pic below to see the answer.

Marked with green is bond between same atoms... one carbon and another carbon so it is not polar and test marked with blue are polar.

Well the answer should have been 10 but since the bonds at 3 and 8 are two of same type we count only one of them.


The answer is 8... well the answer should be 10 otherwise... discuss it with ur teacher

6 0
3 years ago
While in Europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per lite
balu736 [363]
You would have spent $18.9
3 0
3 years ago
Read 2 more answers
What is a nonpolar bond? ​
Ierofanga [76]

Answer:

Nonpolar covalent bonds are a type of bond that occurs when two atoms share a pair of electrons with each other. These shared electrons glue two or more atoms together to form a molecul

Explanation:

7 0
2 years ago
Why do substances with different structures have similar conductivity values
weeeeeb [17]

Answer:

because of the material, they are made of      

Explanation:

like a paperclip and a car door maybe they both are metal or steel whatever they both can conduct energy. because of what they are made of.

i hope this helps and sorry i am rushing, i also just woke up

7 0
2 years ago
Other questions:
  • Is potassium borate soluble?
    5·1 answer
  • What is the theoretical yield of silver chloride?
    14·1 answer
  • Why metals are good conductors
    15·2 answers
  • How many significant figures are in 11.005 g​
    9·1 answer
  • What is the pH of a solution with [H ] = 1.25´10–10?
    9·2 answers
  • Need help with these problems
    5·1 answer
  • How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen?
    8·1 answer
  • Identify the charges = Mg2+ F1
    8·1 answer
  • 3. ¿Cuál de las siguientes operaciones es correcta para calcular el número de moles de hidrógeno necesarios para producir 6 mole
    14·1 answer
  • A property of matter that can best be observed when matter is involved in a chemical
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!