1) Which type of bond involves valence electrons constantly moving between atoms, like a sea of electrons? a. Ionic
b. Covalent
c. Molecular
d. Metallic
(if you answer this i will give you brainliest) ---
2) An atom of Nickel (Ni) has bonded to another atom to form a solid, crystal-like substance with a high boiling point. Which atom has Ni most likely bonded with?

a. Ca
b. Fe
c. S
d. Li

d. Metallic

c. S

Explanation:

A metallic bond is an interatomic bond in which valence electrons are constantly moving between atoms like a sea of electrons.

2. The bond type described in the second problem is an ionic bond. This results in the formation of crystal lattice with strong bonds.

i think 4.44 moles

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.