Addition of 6.0 M acetic acid dissolves CaCO3(s) and CaHPO4(s), but not CaC2O4(s). Clearly explain this observation using numbers to support your explanation. (Hint: Think about equilibrium and the 4 acids/bases involved.)

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.

Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.

Classify this reaction: 2al+n2-> aln.