Which is the solubility product expression for Na3PO4(s)? [Na]+3 [PO4]3–
[Na+3] / [PO43–]
[Na]+3 / [PO4]3–
[Na+]3 [PO43–]

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

Which compound contain an iron with a 3+ charge

Analyze the reaction to determine whether the reaction is exothermic or endothermic. explain your reasoning.