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
enot [183]
3 years ago
9

How many molecules are in 2L of water vapor at STP?

Chemistry
1 answer:
JulsSmile [24]3 years ago
8 0

Answer:

5.4 x 10²²molecules

Explanation:

Given parameters = 2L

Unknown; number of molecules

Condition of the water vapor is at standard Temperature and Pressure

Solution

To solve this problem, we simply find the number of moles the given volume would yield at STP using the relationship below:

             Number of moles = \frac{volume occupied}{22.4}

    Number of moles = \frac{2}{22.4} = 0.089mole

To find the number of molecules in the solved mole of the water vapor:

we use the avogadro's constant to evaluate.

             1 mole of a water vapor = 6.02 x 10²³ molecules

             0.089 mole of water vapor =  0.54 x 10²³molecules

Number of molecules of water is 5.4 x 10²²molecules

You might be interested in
If you need to extract a 50 ml aqueous solution with 50 ml of dichloromethane, what is the minimum size of a separatory funnel y
tatuchka [14]

The dichloromethane (DCM) has less density than water and also the polarity of water is much more than DCM. So the mixture of water and dichloromethane will always be a heterogeneous mixture. In the mixture dichloromethane will be always up of the water layer. The volume of the separatory funnel which contains the mixture of DCM and water must have to be more than the total volume of the liquids thus the volume of the funnel will be more than (50+50) = 100mL.

The caution have to consider during the separation are-

1. The separatory funnel have to shake well with lid and have to settle down for some times until the two liquid separated.

2. The lid should be open very slowly as the vapor pressure of DCM is more and it will float on the water.

3. After this the stopcock should be opened and slowly the water will come out first followed by DCM.      

7 0
3 years ago
What is the basic unit of chemistry?
Luba_88 [7]
An atom hopefully this helps
7 0
3 years ago
Read 2 more answers
A flask contains an equal mixture of oxygen and argon. Which of the following statements is true about the effusion of the gases
frozen [14]
Given that the pressure, temperature and area of effusion is constant, the rate of effusion is inversely proportional to the square root of the molecular mass of the gas.
Mr Oxygen = 32
Mr Argon = 40
Effusion Oxygen = 1/√32
Effusion Argon = 1/√40
Effusion Oxygen / Effusion Argon = √(40) / √(32)
=√(40/32) = √(5/4) = 1.19
Thus, Oxygen will effuse 1.19 times faster than Argon. The second option is correct.
8 0
3 years ago
is the metal clip on the seatbelt in the summertime have a higher specfic heat or does the fabric on the seat belt?
SOVA2 [1]
Yes because metal is more attracted to heat from the sun
5 0
3 years ago
Calculate the density of a solid that has a volume of 2cm3 and a mass of 3g
katrin2010 [14]

Answer:

The density is 6

Explanation:

p = m × v

p = 3 × 2

p = 6

Hope this helped! :)

8 0
3 years ago
Other questions:
  • 1 pentagram equals how many grams
    10·1 answer
  • What atomic component contributes to many of the trends of elements
    10·1 answer
  • Convection currents or wind in the atmosphere
    14·1 answer
  • Why the process of heating hydrate compound should be started slowly first
    11·2 answers
  • About one hundred thousand years ago, very fluid lava started erupting slowly and gently from a place near a plate boundary. Wha
    5·1 answer
  • Ethane, C2H6, can be formed by reacting acetylene, C2H2, with hydrogen gas as follows: C2H2(g) H2(g) ⇌ C2H6(g) Exothermic What c
    12·1 answer
  • Which missing item would complete this alpha decay reaction?<br><br> 257/100 Fm= ________+4/2He
    8·2 answers
  • You are provided with a compound fertilizer, 40-15-10.Calculate the quantity of fertilizer to add to a one hectare field supply
    11·1 answer
  • Air movement can affect how quickly evaporation occurs.<br> O True<br> O False
    9·1 answer
  • I NEED TOUR HELP, PLEASE.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!