11. If the system 2CO(g) + O2(g) = 2CO2(g) has come to equilibrium and then more CO(g) is added, a. [CO2) increases and [02] decreases. c. (CO2) decreases and [O2] decreases.
b. [CO2) increases and [02] increases. d. both [CO2] and [O2] remain the same

2b2t

explanation:

2b2t

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.