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
sp2606 [1]
3 years ago
5

For a gas sample containing equimolar amounts of carbon monoxideand heliumat 300 K, heliumhas _____________average speed and ___

__________ average kinetic energy compared tocarbon monoxidegas.a.a lower; the same b. the same; the same c. a higher; the same d. a higher; higher
Chemistry
1 answer:
igor_vitrenko [27]3 years ago
4 0

Answer:

Option C (a higher; the same) is the appropriate response.

Explanation:

Given:

Temperature,

T = 300 K (both N_2 and H_2)

As we know,

Average speed of a molecule,

⇒ \bar v=\sqrt{\frac{8RT}{\pi  M} }

Thus, the average speed of N_2 will be lower as its molar mass is greater than H_2.

Now,

⇒ Average \ kinetic \ energy = \frac{3}{2} \ KT (not depend on molar mass)

Hence, it will be the same.

The other three alternatives aren't connected to the scenario given. So the above is the correct answer.

You might be interested in
What is measurement?...​
Maksim231197 [3]

Explanation:

Measurement is the quantification of attributes of an object or event, which can be used to compare with other objects or events

3 0
3 years ago
Read 2 more answers
Five strategies needed by learners to acquire knowledge and skills to make informed decisions and take appropriate actions to en
otez555 [7]
The five strategies could include; 1) research the question of clean water availability on line and in books (2 strategies), 2) interview or ask those affected by lack of availability of clean water and find out how it affects them 3) consult with other groups ie political groups also concerned with this question and find out what they did to ensure availability to clean water and lastly to take actions to fight for the accessibility of clean water for certain groups of people like the First Nations people on reserves in Canada.
6 0
3 years ago
When electromagnetic radiation above the threshold frequency falls on an object, it emits electrons? a
Bingel [31]

<span>Electromagnetic radiation will be emitted when any object has a temperature above zero.  The reason behind this is that atoms within any object at a temperature above absolute zero have energy, and thus is moving.</span>

<span>Atoms are at least partly composed of charged particles, changed particles must be moving too.</span>

8 0
3 years ago
The normal boiling point of ethanol (c2h5oh) is 78.3 °c and its molar enthalpy of vaporization is 38.56 kj/mol. what is the chan
kaheart [24]
When the entropy change of vaporization
       
 = enthalpy of vaporization/boiling point temperature 

when we have the enthalpy of vaporization = 38560 J/mol

and the boiling point temperature in Kelvin = 78.3 + 273 = 351.3 K

by substitution:

∴the entropy change of vaporization = 38560J/mol/351.3K

                                                               = 109.76 J/K/mol

and when the liquid has lesser entropy than the gas and we here convert from

gas to liquid so, the change in entropy = -109.76 J/K/mol

now, we need the moles of C2H5OH = mass/molar mass when the molar

mass of C2H5OH = 46 g/mol and mass = 42.2 g 

∴ moles of C2H5OH = 42.2 g / 46 g/mol = 0.92 moles

when 1 mol of C2H5OH turns in liquid entropy change →-109.76 J/K/mol

∴ 0.92 mol of C2H5OH → X

∴ X entropy change when 0.92 mol = -109.76 *0.92 mol / 1 mol

                                                             = 84.64 J/K


6 0
3 years ago
1.5L of water is boiled to steam at a temperature of 100 degrees Celsius and creates 3.5atm of pressure on the container. How ma
Lyrx [107]
I did for you hope you the best

5 0
3 years ago
Other questions:
  • On many common appliances, there is an “O” or “I” on the power switch. What does each symbol mean?
    13·1 answer
  • Which particles make up the nucleus of an atom? A. protons and electrons B. neutrons and electrons C. protons only D. protons an
    14·1 answer
  • How do atomic mass and atomic number change across and dow the periodic table of elements?
    10·1 answer
  • Which has the higher boiling point, C3H8 or C8H10? Explain your reasoning.
    5·1 answer
  • Some athletes have as little as 3.0% body fat. If such a person has a body mass of 67 kg , how many pounds of body fat does that
    14·1 answer
  • Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride. mc011-1.jpg This equation represents a
    10·2 answers
  • Draw the structural formula for fatty acid C 18:2 9 a 12a
    6·1 answer
  • A place where animals are protected in their natural habitat is called ------------------
    7·2 answers
  • (06.01 MC)
    9·1 answer
  • Explain the difference between accuracy and precision.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!