What is the percent of iron (Fe) in 325g of FeCl3

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

What happens when an acid dissolves?

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same