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
AfilCa [17]
2 years ago
11

Calculate the number of moles of a gas that is present in a 7.55 L container at 45°C, if the gas exerts a pressure of 725mm Hg.

Enter your answer in the box provided. mol
Chemistry
1 answer:
vovikov84 [41]2 years ago
4 0

<u>Answer:</u> The number of moles of gas present is 0.276 moles

<u>Explanation:</u>

To calculate the number of moles of gas, we use the equation given by ideal gas:

PV = nRT

where,

P = Pressure of the gas = 725 mm Hg

V = Volume of the gas = 7.55 L

n = number of moles of gas = ?

R = Gas constant = 62.3637\text{ L.mmHg }mol^{-1}K^{-1}

T = Temperature of the gas = 45^oC=(45+273)K=318K

Putting values in above equation, we get:

725mmHg\times 7.55L=n\times 62.3637\text{ L.mmHg }mol^{-1}K^{-1}\times 318K\\\\n=0.276mol

Hence, the number of moles of gas present is 0.276 moles

You might be interested in
Why did we change our understanding of where life comes from?
Andru [333]

Answer:

whathappensinthisstory

8 0
2 years ago
How does a chemist count the number of particles in a given number of moles of a substance?
jolli1 [7]
The chemist the count the number of particles (Atoms, Molecules or Formula Unit) in a given number of moles of a substance by using following relationship.

                              Moles  =  # of Particles / 6.022 × 10²³

Or,

                              # of Particles  =  Moles × 6.022 × 10²³

So, from above relation it is found that 1 mole of any substance contains exactly 6.022 × 10²³ particles. Greater the number of moles greater will be the number of particles.
8 0
3 years ago
What happens to the matter in the body of an animal after it dies
sladkih [1.3K]
The matter will be consumed by other living organisms and the blood will settle to the bottom of the body
4 0
3 years ago
The state of the atmosphere at a given time and place is called
s344n2d4d5 [400]

Answer:a

Explanation:

6 0
3 years ago
Read 2 more answers
As you move from left to right across the periodic table elements ?
Sidana [21]

Explanation:

Quite a number of properties varies across a period. Some remains constant whereas others decreases.

As one moves from left to right;

  • The energy level remains the same.
  • The ionization energy increases progressively as a result of increasing nuclear charge.
  • Electron affinity increases from left to right.
  • Electronegativity increases.
  • Electropositivity decreases.

learn more:

Periodic table brainly.com/question/2014634

#learnwithBrainly

6 0
3 years ago
Other questions:
  • How many grams of NH3 are needed to provide the same number of molecules as in 0.55 grams of SF6?
    11·1 answer
  • How many moles of MgCL2 are there in 311 g of the compound
    8·1 answer
  • 1. Heat transfer takes place when:
    8·1 answer
  • Why do electrons enter the 4s orbital before entering the 3d orbital?
    8·1 answer
  • Sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas:NaH (s) H2O (l) → NaOH (aq) H2 (g)A
    7·2 answers
  • How many moles of solid naf would have to be added to 1.0 l of 2.39 m hf?
    9·1 answer
  • Write empirical formula
    9·1 answer
  • What is an example of conduction, raditaon convection
    14·1 answer
  • The surfaces of leaves contain guard cells that open and close the stomata.
    13·2 answers
  • 3. A light bulb containing argon gas is switched on,
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!