Question

Question:

Answer 1

If you drop a 50 gram piece of metal that has a temperature of 110°Celsius into 1000 grams of water at 25°Celsius, what best describes what would occur? (2 points)

The water will quickly reach the boiling point.
The water's temperature will stay the same, but the metal will cool down.
The water's temperature will increase, and the metal will stay constant.
The water and the metal's temperature will reach the same temperature.

I want to go with D on this one

Answer 2

Which of the following circumstances will result in a reaction that is spontaneous at all temperatures?

positive enthalpy change and positive entropy change
negative enthalpy change and negative entropy change
positive enthalpy change and negative entropy change
negative enthalpy change and positive entropy change
This one I'm really not very sure, but thinking A

Answer 3

D.
For thermodynamics two bodies will reach the equilibrium, so the same T.

Answer 4

Yayyy!

Answer 5

For a reaction at constant temperature and pressure, ΔG in the Gibbs free energy is:
\[ \Delta G = \Delta H - T \Delta S \\]
The sign of ΔG depends on the signs of the changes in enthalpy (ΔH) and ENTROPY (ΔS), as well as on the absolute temperature (T, in kelvin). ΔG changes from positive to negative (or vice versa) where T = ΔH/ΔS.

When ΔG is negative, a process or chemical reaction proceeds spontaneously in the forward direction.

When ΔG is positive, the process proceeds spontaneously in reverse.

When ΔG is zero, the process is already in equilibrium, with no net change taking place over time.

Answer 6

Positive enthalpy change and positive entropy change

dg will be negative only is DH is smaller numer that DS, or if T are


Negative enthalpy change and negative entropy change
DG will be always positive



Positive enthalpy change and negative entropy change
DG will be always positive


Negative enthalpy change and positive entropy change

Will be always negative