HELP ME PLEASE I BEG Can someone explain what the heII lattiCE STRUCTURES ARE. WHY IS IT THAT NaCl HAS 27 ATOMS IN ITS STRUCTURE WHEN THE BALANCED MOLECULE HAS 2 ATOMS?? WHAT HAPPENS TO THE LAST ONE??? WHAT IS A CELL UNIT?? I THOUGHT CELLS WERE A BIO THING? PLEASE IM DESPERATE THIS IS ALL THE POINTS I HAD

please to all the kind souls out there, i just wanna pass chem ;-;

A lattice structure is a space-filling unit cell that can be tessellated along any axis with no gaps between cells. These structures are an emerging solution to weight, energy and advanced manufacturing time reduction

id k the second and third one

A unit cell is the smallest portion of a crystal lattice that shows the three-dimensional pattern of the entire crystal. A crystal can be thought of as the same unit cell repeated over and over in three dimensions

hope it helps this is all i can do

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