Question 1
A gas absorbs 0.0 J of heat and then performs 30.8 J of work. The change in internal energy of the gas is
◦
61.6 J.◦
30.8 J.◦
–61.6 J.◦
–30.8 J.◦
none of these are correct.Question 2
According to the first law of thermodynamics, the energy of the universe is constant. Does this mean that ΔE is always equal to zero?
◦
Yes, ΔE = 0 at all times, which is why q = -w.◦
No, ΔE does not always equal zero, but this is only due to factors like friction and heat.◦
No, ΔE does not always equal zero because it refers to the system's internal energy, which is affected by heat and work.◦
No, ΔE never equals zero because work is always being done on the system or by the system.◦
No, ΔE never equals zero because energy is always flowing between the system and surroundings.
Adenosine triphosphate (ATP) provides energy
Solar Energy
Free Energy Enzymes
Energy imbalance establishes a temperature gradient between the tropics and the poles
Energy Transfer
Energy in a Circular Orbit