Answer:
-77870 J is the change in internal energy for the system.
Explanation:
According to the first law of thermodynamics:-
Where,
U is the internal energy
q is the heat
w is the work done
From the question,
q = + 130 J (+ sign as the heat is being absorbed)
(negative sign as work is done by the system)
So,
<u>-77870 J is the change in internal energy for the system.</u>
Answer:
B
Explanation:
Temperature & pressure are directly proportional
7 mass number is the number of protons and neutrons in an atom
Generally, solids are denser than liquid, which is denser than gas of one particular substance. In liquid phase, molecules are freer and can move around, so it is less dense than solid, but denser than gas, in which the molecules move at high speed with large separation from one another.
Answer:
<u>D the liquids are allowed to seperate into layers</u>
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