The voltage generated by the zinc concentration cell described by the line notation Zn(s) || Zn2+(aq,0.100 M) ‖‖ Zn2+(aq,? M) || Zn(s) Zn(s) | Zn2+(aq,0.100 M) ‖ Zn2+(aq,? M) | Zn(s) is 27.0 mV27.0 mV at 25 °C.25 °C. Calculate the concentration of the Zn2+(aq)Zn2+(aq) ion at the cathode.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

i believe it is a.) released into

explanation:

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements