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
icang [17]
2 years ago
5

A flask at room temperature contains exactly equal amounts (in moles) of nitrogen and xenon.

Chemistry
1 answer:
zalisa [80]2 years ago
4 0

Answer:

a) Same

b) Nitrogen

c) Same

d) Nitrogen

Explanation:

a)

The formula for partial pressure of a gas is equal to

p_B = n_B \frac{RT}{V}

Here nB is the number of moles .

The number of moles for both the gases are same and hence the partial pressure for the two gases will also be same.

b) The greater average velocity is calculated by using following formula

v_{RMS} = \sqrt{3RTM}

Here M is the molar mass.

Molar mass of nitrogen is greater than the molar mass of xenon and hence nitrogen will have higher greater average velocity

c) As we know, the average kinetic energy of gas particles is dependent on the absolute temperature of gas and if all the gases are at same temperature, their kinetic energy will also be same. Since nitrogen and xenon are at same temperature, their kinetic energy will be same

d) Effusivity is depended directly on  the thermal conductivity,  density and  and the specific heat capacity.

All these three parameters are higher in case of nitrogen. Thus, it will effuse first

You might be interested in
A certain element exists as two different isotopes. 76.00% of its atoms have a mass of 35.00 amu and 24.00% of its atoms have a
ivanzaharov [21]

Answer:

35.48 uma

Explanation:

An isotope is when an element has equal numbers of protons but different mass value because it has different amount of neutrons.

To calculate the average atomic mass with the given data:

First change de percentages to fractional numbers, divide by 100.

Remember the sum of a percentage is equal to 100, but when you are adding the fractions the sum is equal to 1.

76/100 = 0.76

24/100 = 0.24

  %       fraction

76.00 0.76

24.00 0.24

total100.00 1.00

Now, multiply the mass with their corresponding fraction:

35(0.76) = 26.60

37(0.24) =  8.88

%      fraction amu amu

76.00 0.76 35         26.60

24.00 0.24 37         8.88

total100.00 1.00    average 35.48

Now you add the calculated mass to obtain the average atomic mass of the element.

And the value you will get is 35.48 amu.

I included an excel table so you can review it, I like to organize all the given data and the calculation in tables, also I think is easier to understand.

Download xlsx
7 0
3 years ago
Which organ gives our body the sense to touch, protects it, and helps keep it at the right temperature?
Tomtit [17]
The answer is A) skin
7 0
3 years ago
Read 2 more answers
One of the reactions you observed resulted in this product: nacl + h2o + co2 (g)? what well did this reaction occur in? describe
Nostrana [21]
Chemical reaction: NaHCO₃ + HCl → NaCl + CO₂ + HCl.
Reaction occurs between sodium bicarbonate (sodium hydrogen carbonate) and hydrochloric acid. For example, hydrogen carbonate<span> mixed with water is used like </span>antacid (neutralizes <span>stomach acidity), contverts </span>stomach acid (hydrochloric acid) to carbon dioxide.
7 0
3 years ago
A physical change differs from a chemical change in hat waste products are formed through chemical changes. true or false?
masha68 [24]
I would say true :D I think
4 0
3 years ago
Read 2 more answers
How many neutrons does tin-112 have?<br>​
Katarina [22]

Answer:

69 neutrons

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • List the number of protons, neutrons, and electrons in... ( there is a pic)
    8·1 answer
  • What distinguishes a neutral atom from an ion
    11·1 answer
  • Which of the following is a polar protic solvent? Chloroform Methanol Acetone Acetonitrile Diethyl ether
    7·1 answer
  • A 250ml aqueous solution contains 45.1microgram of pesticide.express the pesticide concentration in:
    8·1 answer
  • Which group on the periodic table contains only metals?
    5·1 answer
  • 3.
    5·2 answers
  • Consider the chemical equations shown here.
    8·1 answer
  • PLEASE HELP
    10·2 answers
  • Giving brainly for correct answer! :)
    13·2 answers
  • Kelli and Jarvis are members of the stage crew for the Variety Show. Between acts, they must quickly move a Baby Grand Piano ont
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!