Answer:
Potential energy is at its highest when it is farthest in the air.
Kinetic energy is gretaest at the lowest point of movement.
Answer:
The standard cell potential increases with increasing temperature.
Explanation:
Equatio 1: ΔG° =ΔH° -TΔS°
Equation 2: ΔG° = -nFE°
Isolating E° in equation 2:
E° = - ΔG° / nF (Equation 3)
Substituting equation 1 in equation 3:
E° = (- ΔH° +TΔS°)/ nf
We can rearrange the equation:
E° = (ΔS°/nF) T + (ΔH°/nF)
Now it is clear that the higher the temperature, the higher the standard cell potential.
Answer:
0.64 m
Explanation:
Given that;
1L = 0.001 cubic metre
Then;
263 L = 263 L × 0.001 cubic metre/1L
= 0.263 cubic metre
Volume of a cube = l^3
l= 3√V
l= 3√0.263 cubic metre
l= 0.64 m
Answer:
12.213 minutes will be taken for 120 g-Thalium-208 to decay to 75 grams.
Explanation:
Radioactive isotopes decay exponentially in time, the mass of the isotope (
), in grams, is described by the formula in time (
), in minutes:
(1)
Where:
- Initial mass of the isotope, in grams.
- Time constant, in minutes.
In addition, the time constant associated with the isotope decay can be described in terms of half-life (
), in minutes:
(2)
If we know that 
, 
and 
, then the time taken by the isotope is:
12.213 minutes will be taken for 120 g-Thalium-208 to decay to 75 grams.
Are you referring to which element that has the same reactive properties? If so it would be any element in the Chalcogen group.
