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
jekas [21]
3 years ago
6

A 19.3-g mixture of oxygen and argon is found to occupy a volume of 16.2 l when measured at 675.9 mmhg and 43.4oc. what is the p

artial pressure of oxygen in this mixture?
Chemistry
1 answer:
Shtirlitz [24]3 years ago
7 0
<span>438.0 mmHg is the partial pressure of oxygen The ideal gas law is PV = nRT where P = pressure V = volume n = number of moles R = ideal gas constant (8.3144598 (L*kPa)/(K* mol) ) T = absolute temperature Converting the temperature from C to K gives 43.4 + 273.15 = 316.55 K Converting pressure from mmHg to kPa gives 675.9 mmHg * 0.133322387415 = 90.11260165 kPa Solving for n in the equation for the ideal gas law, gives PV = nRT n = PV/(RT) Substituting known values into the equation. n = PV/(RT) n = 90.11260165 kPa 16.2 L/(8.3144598 (L*kPa)/(K* mol) 316.55 K) n = 1459.824147 L*kPa / 2631.94225 (L*kPa)/(mol) n = 0.554656603 mol So we have 0.554656603 moles of gas particles. Now to determine how much of that is oxygen. Atomic weight oxygen = 15.999 g/mol Atomic weight argon = 39.948 g/mol Molar mass O2 = 2 * 15.999 = 31.998 g/mol Now we need to figure out how many moles of O2 gas and Ar will both add up to the number of moles of gas particles and have the proper mass. So M = number of moles of O2 0.554656603 - M = number of moles of Ar and M * 31.998 + (0.554656603 - M) * 39.948 = 19.3 Solve for M M * 31.998 + (0.554656603 - M) * 39.948 = 19.3 M * 31.998 + 22.15742198 - M * 39.948 = 19.3 -M * 7.95 + 22.15742198 = 19.3 -M * 7.95 = -2.857421977 M = 0.359424148 So we now know that we have 0.359424148 moles of oxygen gas out of a total of 0.554656603 moles of gas particles. So oxygen gas is providing: 0.359424148 / 0.554656603 = 0.648012024 = 64.8012024% of the total pressure of 675.9 mmHg. So the partial pressure is 675.9 * 0.648012024 = 437.9913271 mmHg = 438.0 mmHg</span>
You might be interested in
What is the answer of these compound
olganol [36]
BaO, Barium Oxide. 

Na2SO4, Sodium Sulfate.

CuO, Copper (II) Oxide.

P2O5, Diphosphorus Pentoxide.

HNO3, Nitric Acid.

CO32-, Molecular Formula. 

Hope this helps. :)
8 0
3 years ago
In the following reaction, C6H6)? 2C6H6 + 15O2 12CO2 + 6H2O,
shepuryov [24]
The answer is 27.92g . working is shown in the picture above.

3 0
3 years ago
Is a blood vessel an organ
Alika [10]
Yes, but they are tubular organs and like all other organs are made up of tissues
7 0
3 years ago
Read 2 more answers
In an experiment, hydrochloric acid reacted with different volumes of sodium thiosulfate in water. A yellow precipitate was form
iris [78.8K]

Answer:

I think that the trend that would be seen in the time column of the data table would be that the number of seconds would increase. I know this because for each flask, the concentration of sodium thiosulfate decreases, since less of it is being mixed with more water. Also, when the concentration of a substance decreases, then the reaction rate also decreases, as there will be fewer collisions with sulfuric acid if there are fewer moles of sodium thiosulfate. When there are fewer collisions in a reaction, the reaction itself will take longer, and so when the sodium thiosulfate is diluted, the reaction takes more time.

Explanation:

<em>I verify this is correct. </em>

6 0
3 years ago
Locate the element zinc (Zn) on the periodic table. How many protons does an atom of zinc contain? How many electrons does an at
Lady bird [3.3K]
<h2>Answer:</h2><h3>Part 1:</h3>

Location the element zinc (Zn) on the periodic table:

  •    Group number : 12
  •     Period number : 4
  •     Block :  d block
  •      Element : Transition elements.
<h3>Part 2:</h3>

Protons in an atom of Zn:  30

<h3>Part 3:</h3>

Electrons in a Zn atom: 30

<h3>Part 4 :</h3>

Neutron in an atom of Zn: 35


<h3 />
4 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE ANSWER FIRST GETS BRAINLIEST
    8·1 answer
  • The area surrounding the nucleus is called: protons electrons neutrons electron cloud
    7·2 answers
  • Rock fragments that are cemented together and compacted over time turn into?
    9·2 answers
  • A mole of X reacts at a constant pressure of 43.0 atm via the reaction X(g)+4Y(g)→2Z(g), ΔH∘=−75.0 kJ Before the reaction, the v
    15·1 answer
  • What is the molality of a solution that contains 418.8 g HCl in 4.62 kg water?
    11·2 answers
  • An acetic acid buffer solution is required to have a pH of 5.27. You have a solution that contains 0.010 mol of Acetic acid. Wha
    5·1 answer
  • Which statement about the self-ionization of water is correct?
    6·1 answer
  • Why do atoms combine to form compund?​
    13·1 answer
  • In the chemical formula below, how many H atoms are present?<br> SNH4OH
    11·1 answer
  • 100 points+Brainliest for correct answer
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!