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
Fiesta28 [93]
3 years ago
11

Calculate the pressure in atmospheres of 0.5 mol of Helium ( He) at 20°C & occupying 2.50 L.

Chemistry
1 answer:
Morgarella [4.7K]3 years ago
7 0

Answer:

4.811 atm.

Explanation:

  • We can use the general law of ideal gas:<em> PV = nRT.</em>

where, P is the pressure of the gas in atm (P = ?? atm).

V is the volume of the gas in L (V = 2.5 L).

n is the no. of moles of the gas in mol (n = 0.5 mol).

R  is the general gas constant (R = 0.0821 L.atm/mol.K),

T is the temperature of the gas in K (T = 20°C + 273 = 293 K).

<em>∴ P = nRT/V =</em> (0.5 mol)(0.0821 L.atm/mol.K)(293 K)/(2.5 L) = <em>4.811 atm.</em>

You might be interested in
A crime-scene is roped off with yellow tape. The rectangular area is 5.6 meters long 10.75 meters wide. What is the area of the
maksim [4K]

The area is 60.2, to find area it's length times width.

7 0
3 years ago
An OH group attached to a hydrocarbon is called a _________ group whereas ______________ is a polyatomic ion with a charge of __
rodikova [14]

Answer:

sijshsjdjdjdjdjakskskkskzjzz

3 0
3 years ago
Which physical method can be used for obtaining a sample of salt from a small beaker of salt water? boiling freezing filtration
sergij07 [2.7K]
I think it's boiling :)
3 0
3 years ago
Read 2 more answers
In TEN complete sentences, describe how the LAW OF CONSERVATION applies to the stuff YOU OWN. For example: In real life, can new
satela [25.4K]

Answer:

Both the initial and final substances are composed of atoms because all matter is composed of atoms. According to the law of conservation of matter, matter is neither created nor destroyed, so we must have the same number and type of atoms after the chemical change as were present before the chemical change.

Explanation:

The atoms that make up your body were produced inside a star and have ... I read once that atoms get recycled so much through the planet that each of ... from William Shakespeare, but I do know this: All of us come from stars. ... If you have gold fillings in your teeth, those atoms came from a star explosion.

6 0
3 years ago
WILL GIVE BRAINLIST
8_murik_8 [283]
I would choose C bc if u look at it closely u can notice it goes up steadily and then BANG it decreases a lot
4 0
3 years ago
Other questions:
  • List two factors that would help you decide which hydrocarbon fuel to use in a particular application
    9·1 answer
  • Our blood which is made up of different types of cells is classified as what level of organization? *
    7·2 answers
  • Explain the impact that changing pressure has on a system in a state of dynamic equilibrium. What will happen when pressure on a
    9·1 answer
  • True or False: If you have 2 moles of water and 2 moles of carbon, you have the same number of molecules.
    5·2 answers
  • Which refers to the passing of a wave through an object?
    10·2 answers
  • What gas is released when potassium permanganate is decomposed
    7·1 answer
  • Sacar los números cuánticos de cobalto (Co)Z=27
    15·1 answer
  • When 3.915 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 12.74 grams of CO2 and 3.913 grams of H
    9·1 answer
  • 1CO₂ (g) + 1C (s) → 2CO (g)<br> Keq =
    11·1 answer
  • Is O2 in SO2 peroxide or not ?​ if it's not why ?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!