Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 545 g of NaOH(s) per liter of solution. Calculate the molarity of this saturated NaOH(aq) solution.

Molarity (M, or mol/L) is defined as moles of solute per liter of solution.

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"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"