Perform the following operation and express the answer in scientific notation. 3.5x102 x 8.0x10-2 [ ? ]x10[?]​

Five students had to answer the question how are elements arranged in a periodic tabledamon: i think the elements are arranged by increasing massflo: i think the elements are arranged according to their properties sienna: i think the elements are arranged by when their discovers kyle: i think the elements are arranged according to how common they areglenda: i don't agree with any of themwho is right

When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5