If you mix different amounts of two ideal gases that are originally at different temperatures, what must be true of the final state after the temperature stabilizes? (There may be more than one correct choice.) a) Both gases will reach the same final temperature.
b) The final rms molecular speed will be the same for both gases.
c) The final average kinetic energy of a molecule will be the same for both gases.
Answers
Answer:
a,c are correct
Explanation:
a) On mixing two gases the final temperature of both the gases becomes the same. The heat will flow from high temp. gas to lower temp gas till the temp of both gases become equal (Thermal equilibrium). This is correct.
b) The rms speed of the molecule is inversely proportional to its molar mass so the final rsm will not be the same. This is incorrect.
c) The average kinetic energy of the system will remain the same. Hence this is also correct.
Related Questions
If a student weighs out 0.744 g Fe ( NO 3 ) 3 ⋅ 9 H 2 O , what is the final concentration of the ∼0.2 M Fe ( NO 3 ) 3 solution that the student makes?
Please help 25 points :DPhases of Matter ActivityNow it is your turn to show what you know about phases of matter and thermal energy transfer! Your task is to create a presentation to explain the transformation of a substance as it changes phases. You may choose to write a story or create a comic strip. For your story or comic, you will create a main character and detail the adventure as your character is exposed to thermal energy, causing it to undergo phase changes from a solid, to a liquid, to a gas. You may create your own comic strip using drawings, presentation software, or this comic strip template.Your presentation must include the following:title and introduction of your character, including what substance the character is made ofsource of thermal energy your character encountered (conduction, convection, and/or radiation)a detailed description and/or diagram of the particle transformation from solid to liquid phasea detailed description and/or diagram of the particle transformation from liquid to the gas phaseYou may get creative on this activity. If you are unsure if your idea or software for a presentation will work, contact your instructor for assistance. Be sure to review the grading rubric before you begin.
A pharmacist wishes to strengthen a mixture from 10%alcohol to 30% alcohol. How much pure alcohol should be added to 7 liters of the 10% mixture?
2 N H 3 ( g ) ⟷ N 2 ( g ) + 3 H 2 ( g ) K p = 0.83 Consider your answers above, if the initial pressures for all three species is 1 atm what is the equilibrium pressure of H2? (Hint: Your quadratic will have two solutions, which one is impossible?)
the length of ribbon needed to tie around a vase
B.
the size of a student's waist
C.
the distance from the ground to the top of a ramp
D.
the circumference of an orange
Answers
Answer:
C
the distance from the ground to the top of a ramp
Answers
Answer:
Ag(s):H2O(l) = 3:2
For 3 moles Ag(s) we'll have 2 moles H2O(l)
Option D is correct
Explanation:
Step 1: Balancing the equation
3 Ag (s) + 4 HNO3 (aq) → 3 AgNO3 (aq) + NO (g) + 2 H2O (l)
3Ag(s) + 4NO ^3- + 4H+ →3Ag+ +3NO3- + +NO + 2H2O
3Ag(s) + NO ^3-(aq) + 4H+(aq) →3Ag+(aq) +NO(g) + 2H2O(l)
Step 2: The ratio between Ag(s) and H2O(l)
Ag(s):H2O(l) = 3:2
For 3 moles Ag(s) we'll have 2 moles H2O(l)
Option D is correct
Answers
Answer:
The answer is 85.71 mL
Explanation:
The new volume can be found by using the formula for Boyle's law which is
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we are finding the new volume
We have
We have the final answer as
85.71 mL
Hope this helps you
largest atomic radii.
Answers
Answer:
left to right across a period when it decreases and when it increases top to bottom in a group,
hope i helped
Answers
Explanation:
CH2)3(g)CH3CH=CH2(g) [(CH2)3], M time, min
0.128 0
6.40×10-2 14.4
3.20×10-2 28.8
1.60×10-2 43.2
(1) What is the half-life for the reaction starting at t=0 min? min
Half life is the amount of time required for a substance to decay by half of it's initial concentration.
Starting form 0, the initial concentration = 0.128
After 14.4 mins, the final concentration is now exactly half of the initial concentration. This means 14.4 min is the half life starting from t=0min
What is the half-life for the reaction starting at t=14.4 min?
Starting form 14.4min, the initial concentration = 6.40×10-2
After 14.4 mins (28.8 - 14.4), the final concentration is now exactly half of the initial concentration. This means 14.4 min is the half life starting from t=14.4min
Does the half-life increase, decrease or remain constant as the reaction proceeds?
The half life is a constant factor, hence it remains constant as the reaction proceeds.
(2) Is the reaction zero, first, or second order?
Because the half life is independent of the concentration, it is a first order reaction.
In a zero order reaction, the half life Decreases as the reaction progresses; as concentration decreases.
In a first order reaction, the half life Increases with decreasing concentration.
(3) Based on these data, what is the rate constant for the reaction? min-1
The realtionship between the half life and rate onstant is;
k = 0.693 / half life
k = 0.693 / 14.4
k = 0.048125 min-1
Answers
Answer:
325mg of Aspririn
Explanation:
First you should note the information that the problem gives you:
- The bottle of Aspirin has 5gr (grains)
- 1gr(grain) = 65mg (miligrams)
Also, the problem is asking about how many aspirin are in 5 gr (grains), so you should use a conversion factor, as follows:
-First you should put the quantity you need to convert:
-Then you write the denominator of the conversion factor that must have the same units that you want to convert, in this case gr:
-Then you write the numerator with the units that you want to obtain and the numerical equivalence between the units, in this case:
-Finally you multiply numerators and divide by denominators: