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
aleksley [76]
3 years ago
12

A sample of helium has a volume of 50.00 L at STP. How many helium atoms are in the sample? Show work

Chemistry
1 answer:
Setler79 [48]3 years ago
4 0

Answer:

Explanation:

molar volume at STP=22.4 L

given volume=50.0 L

number of moles=given volume/molar volume

number of moles=50.0/22.4

number of moles=2.2

1 mole of helium =6.023*10^23 atoms

2.2 moles of helium =6.023*10^23*2.2=1.3*10^24

therefore 50.0 L of helium contain 1.33*10^24 atoms

You might be interested in
What makes the peer-review process important to our society? Explain your answer.
Lelechka [254]

Answer:

by doing stool hahhahahhaha

3 0
3 years ago
Read 2 more answers
An aqueous solution of blue copper(II) ions can react with chloride ions to form a yellow copper compound. The ionic equation fo
klio [65]
Since the forward reaction is endothermic (heat is consumed in the reaction) that means that the enthalpy change for the forward reaction is a positive value.
Therefore, i would say that the reverse or backward reaction is exothermic (heat is released in the reaction to the sorroundings) and that the enthalpy change is a negative value.
5 0
3 years ago
Chemical energy is a form of _____ energy.
inn [45]

Answer: Option (d) is the correct answer

Explanation:

The energy present within the bonds of the atoms of a compound or molecule is known as chemical energy.

As this energy is present at a position that is, within the bonds hence it is a potential energy. So, whenever there occurs a chemical reaction the stored chemical energy is released.

As potential energy is the energy possessed because of position of a substance. And, kinetic energy is the energy present due to the motion of an object.

Therefore, we can conclude that chemical energy is a form of potential energy.

6 0
3 years ago
Express 4,935,000 using standard scientific notation
nataly862011 [7]

Answer:

4.935×10-1

Explanation:

Take away the 0

3 0
3 years ago
Plz help me well mark brainliest if correct
Scrat [10]

Answer:

D) biodiversity

Explanation:

the answer is D) biodiversity

7 0
3 years ago
Read 2 more answers
Other questions:
  • C12H22O + 11 H2SO4 → 12 C + 11 H2SO4 + 11 H2O.
    12·1 answer
  • Electrons spill in shells in the nucleous the closest shell (n=1) can contain the maximum of. Electrons
    9·1 answer
  • For which purpose do biochemists insert human genes into bacteria?
    6·2 answers
  • The data were collected over five spring seasons. What is the difference between the number of frogs in the pond when the rainfa
    5·1 answer
  • under a pressure of 1.0 atm , a confined gas has a volume of 750mL. at constant temperature, the pressure is increased until the
    5·1 answer
  • Fill in the blanks
    13·1 answer
  • What parts of microscope that enlarge the object once seen under the microscope
    15·2 answers
  • What color would red litmus paper turn in a solution of lime juice? Plz ans :(
    9·2 answers
  • How can Cold air be made to rise
    11·1 answer
  • The atomic number of Oxygen is 8. Therefore, which of the following answers would correspond to what would be in the nucleus of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!