Determine how many atoms of pure silver will be created when 19.83 x 1023 atoms of copper are used in the following reaction:
cu + 2agno3 -> cu(no3)2 + 2ag
avogadro's number: 6.02 x 1023

Answer : The number of silver atoms produced will be

Explanation : Given,

Number of atoms of copper =

The given balanced chemical reaction,

From the balanced chemical reaction we conclude that,

As, number of copper atoms react to give number of silver atoms.

So, number of copper atoms react to give number of silver atoms.

Therefore, the number of silver atoms produced will be

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.