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
andriy [413]
2 years ago
5

3. A sample of octane (C3H18) gas has a mass of 1.135 g at a volume of 400. cm'3 and a temperature

Chemistry
1 answer:
boyakko [2]2 years ago
5 0
<h3>Answer:</h3>

9.65 atm

<h3>Explanation:</h3>

From the question, we are given;

  • Mass of  octane is 1.135 g
  • Volume of octane is 400 cm³ or 0.4 L
  • Temperature of octane is 200°C

       But, K = °C + 273.15

  • Therefore, the temperature is equivalent to 473.15 K

We are required to calculate the pressure of the gas.

To do this, we are going to use the ideal gas equation;

  • According to the ideal gas equation;
  • PV = nRT, where n is the number of moles, R is the ideal gas constant, 0.082057 L.atm/mol.K
  • We can rearrange the formula to calculate the pressure;

P = nRT ÷ V

  • But, n is the number of moles;
  • Moles = Mass ÷ Molar mass
  • Molar mass of octane is 114.23 g/mol
  • Moles of octane = 1.135 g ÷ 114.23 g/mol

                                    = 0.00994 moles

Therefore;

P = \frac{(0.00994 moles)(0.082057)(473.15)}{0.4L}

P=9.648atm

P = 9.65 atm

Thus, the pressure of the gas is 9.65 atm

You might be interested in
Acid and base ph PhET simulation lab
astra-53 [7]

Answer:

Test the pH of things like coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Visualize ... Investigate whether changing the volume or diluting with water affects the pH. ... Original Sim and Translations ... Lab, Chemistry.

8 0
2 years ago
What is the mass in grams of 1.204x10^24 atoms of carbon
Mekhanik [1.2K]
It should be 24g of carbon
4 0
2 years ago
One way to determine the degree of saturation of a solid-liquid solution is to drop a crystal of the solute into the solution.
Dafna1 [17]

The answer is D: Saturated.

A saturated solution is one in which the exact maximum amount of solute has been dissolved.  So, new solute will not dissolve in the solution.  In contrast, an unsaturated solution can hold more solute, so if that option were correct, the crystal would have dissolved.

The other two terms are a bit more complicated.  A supersaturated solution is one holding an amount of solute above the sustainable limit.  Because of that, when more solute is added, the solution will immediately adjust, and some solute will come out of solution in a precipitate.  Because the crystal isn't growing, we can eliminate this option.

A concentrated solution is one holding a relatively large amount of solute.  However, you can have concentrated solutions that are saturated and unconcentrated (the word for this is dilute) solutions that aren't saturated.  Therefore, we can say that because the crystal doesn't dissolve, this solution is saturated, but we can't say with certainty that it is concentrated.

Because the first three options are invalid, as described above, while the scenario does describe a saturated solution, D is the correct answer.

7 0
3 years ago
Read 2 more answers
There are always attractive forces between a collection of atoms or molecules which may not be negligible as suggested by the ki
Harrizon [31]

Answer:

Negligible

Explanation:

According to the kinetic theory of gases, the degree of intermolecular interaction between gases is minimal and gas molecules tend to spread out and fill up the volume of the container.

If the attraction between gas molecules increases, then the volume of the gas decreases accordingly. This is because, gas molecules become highly attracted to each other.

This intermolecular attractive force may be so strong, such that the actual volume of the gas become negligible compared to the volume of the container.

7 0
3 years ago
"what is the concentration of positive charge and mass in rutherford's atomic model called?"
Tamiku [17]
The concentration of positive charge and mass in Rutherford's atomic model is called the nucleus. Rutherford's experiments involving the use of alpha particle beams directed onto thin metal foils demonstrated the existence of the nucleus. The nucleus of an atom contains positively charge particles called protons and other uncharged particles called neutrons. According to this model most volume of an atom is made up of an empty space. 
3 0
3 years ago
Other questions:
  • write a statement that makes a claim about arrangements of electrons and properties within a family of elements
    10·1 answer
  • Which subatomic particles are located in the nucleus of an He-4 atom?
    12·1 answer
  • A buffer is made up of 0.300 L of each of 0.500 M KH2PO4 and 0.317 M K2HPO4. Assuming that volumes are additive, (a.) calculate
    13·1 answer
  • Covalent bonds usually occur between atoms that have and . A. High molecular weights; large atomic radii B. Low ionization energ
    13·1 answer
  • Electrons orbit around the nucleus of atoms in allowed energy states. This is the basis of the theory of which scientist?
    12·1 answer
  • Calculate the pH of a solution that contains 2.7 M HF and 2.7 M HOC6H5. Also, calculate the concentration of OC6H5- in this solu
    14·1 answer
  • BRAILY I NEED HELP ASAPP
    7·1 answer
  • How to get pH from OH-
    14·1 answer
  • Does anyone know if this is correct?
    7·1 answer
  • According to the iupac convention, alkyl substituents on a hydrocarbon chain should be listed in which order?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!