Answer:
C. An electron at this electrode has a higher potential energy than it has at a standard hydrogen electrode.
Explanation:
The standard hydrogen electrode (SHE) is used to measure the electrode potential of substances. The standard hydrogen electrode is arbitrarily assigned an electrode potential of zero. Recall that electrode potentials are always measured as reduction potentials in electrochemical systems.
For an electrode that has a negative electrode potential, electrons at this electrode have a higher potential energy compared to electrons at the standard hydrogen electrode. Electrons flow from this electrode to the hydrogen electrode.
On the other hand, a positive electrode potential implies that an electron at this electrode has a lower potential energy than it has at a standard hydrogen electrode. Hence electrons will flow from the standard hydrogen electrode to this electrode.
Answer:
25/12 or about 2.083g/cm^3
Explanation:
The first step is to find the volume of the box. The formula for the volume of a rectangular prism is width*height*length, which in this case is 8*6*5=240 cubic centimeters. The formula for calculating density is mass/volume, which in this case is 500/240=25/12 or about 2.083 g/ cubic centimeter. Hope this helps!
Answer:
The boiling point of iodine is 363.7°F / 184.3°C
