An Aqueous Solution of Orthophosphoric Acid, H₃PO₄, Has a Measured

An aqueous solution of orthophosphoric acid, H₃PO₄, has a measured density of 1.2089 g mL^-1 and is 5.257 molal. How many moles of H₃PO₄ are there in one liter of this solution?

A) 0.4261 moles
B) 4.194 moles
C) 4.349 moles
D) 5.152 moles
E) 6.355 moles