Astandard cell potential of which value describes a spontaneous redox reaction?

a: 0.0 v

b: +0.34 v

c: –1.66 v

d: –0.71 v

could really use some ! !

Answer : The correct option is, (B) +0.34 V

Explanation :

To predict the spontaneity of a redox reaction :

To see whether a given redox reaction is feasible or not, the standard cell potential of the cell based upon the given redox reaction is calculated.

For a redox reaction to be spontaneous, the standard cell potential of the cell  must be positive.

If the standard cell potential comes out to be negative, the direct reaction as given cannot take place, the reverse reaction may take place.

Hence, a standard cell potential +0.34 V describes a spontaneous redox reaction.

um i think it might be a car?

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.