Answer:
increased; almost 100%
Explanation:
The peppered moth witnessed a change in its color and the number at the end of the eighteenth century. The reason behind this was the Industrial Revolution that led to an increase in air pollution. With the increase in air pollution, the dark-colored moths increased in the number. Later, when air pollution decreased, the light-colored moths started to predominate. It was in 1895 that the number of dark-colored moths increased to the maximum.
Answer:
Co(s)→Co3+(aq)+3e−
Explanation:
The half-cell reaction may be defied as the reaction taking place at an individual anode or cathode. The oxidation and reduction reactions occur at the electrodes.
Oxidation reaction occur at anode and reduction reaction at cathode. The half-cell reaction for cobalt silver voltaic cell, the oxidation of cobalt occurs at anode. The cobalt loses its 3 electrons and converted to aqueous state from the solid state.
Thus, the reaction at anode is Co(s)→Co3+(aq)+3e− .
Answer:
elements have only one atom,while mixtures and compounds are made up of more than one atom,hope this helps
