Answer:
Explanation:
2.5 g of He = 2.5 / 4 mole
= .625 moles
9 g of oxygen = 9/32
= .28 mole of oxygen
C_p of He = 3/2 R
C_p of O₂ = 5/2 R
A ) Initial thermal energy of He = 3/2 n R T
= 1.5 x .625 x 8.32 x 300
= 2340 J
Initial thermal energy of O₂ = 5/2 n R T
= 2.5 x .28 x 8.32 x 620
= 3610.88 J
B ) If T be the equilibrium temperature after mixing
gain of heat by helium
= n C_p Δ T
= .625 x 3/2 R x ( T - 300 )
Loss of heat by oxygen
n C_p Δ T
= .28 x 5/2 R x ( 620 - T )
Loss of heat = gain of heat
.625 x 3/2 R x ( T - 300 ) = .28 x 5/2 R x ( 620 - T )
1.875 T- 562.5 = 868- 1.4 T
3.275 T = 1430,5
T = 436.8 K
Thermal energy of He
= 1.5 x .625 x 8.32 x 436.8
= 3407 J
thermal energy of O₂
= 2.5 x .28 x 8.32 x 436.8
= 2543.92 J
C )
Heat energy transferred
= .28 x 5/2 R x ( 620 - T )
= .28 x 5/2 x 8.32 x ( 620 - 436.8 )
1066.95 J
Heat will flow from O₂ to He
Final temperature is 436.8 K
Answer:
A. Scientists use seismic computer models to measure the atmospheric conditions above the Earth's crust
Explanation:
why would use atmosphere to study the layers of earth? dont think thats possible
Answer:
What is your name?
Explanation:
no bro I don't know I am New of this app so I don't know
Answer:
Explanation:
No 1 is linked to the option provided at no 5.
A direct object is the noun that follows the verb and answers the question.
No 2 is linked to the option provided at no 8.
A verb is a word that expresses action.
No 3 is linked to the option provided at no 5.
The subject is what or whom the sentence is about.
No 5 is linked to the option provided at no 3.
A predicate noun follows a linking verb, and renames the subject.
No 6 is linked to the option provided at no 4.
A predicate adjective follows a linking verb, and describes a subject.
No 7 is linked to the option provided at no 1.
A linking verb joins a subject and a predicate.
No 8 is linked to the option provided at no 2.
A sentence expresses a complete thought....