Pleaze help im gonna fail this semester hydrogen peroxide mixed with vinegar makes wich deadly gas?

What is the mass of 0.46 mol of mgcl2

What is the percent by mass of oxygen in fe2o3

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.