If the same materials are used to build a voltaic cell and an electrolytic cell, how would the chemical reactions compare?
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The same overall reaction would happen in each cell, but it would take place spontaneously in the voltaic cell.
The same overall reaction would happen in each cell, but it would take place nonspontaneously in the voltaic cell.
The reaction in the voltaic cell would be nonspontaneous and the reverse of the reaction in the electrolytic cell.
The reaction in the voltaic cell would be spontaneous and the reverse of the reaction in the electrolytic cell.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

3 1/4 %

explanation:

ugh fiel iente of insistí is did kiwis jaj

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3