Determine the molality of an aqueous solution prepared by dissolving 0.112 moles of licl in 13.7 moles of h2o.

Molality is 0.45 mol/kg for the LiCl

Explanation:

Molality → Moles of solute in 1kg of solvent

Let's convert the moles of solvent, water to mass (g)

Afterwards we need to convert the mass from g to kg

Molality → mol / kg

First step: 13.7 mol . 18 g / 1mol = 246.6 g

2nd step: 246.6 g . 1kg / 1000 g = 0.2466 kg

Molality → mol/kg → 0.112 moles / 0.2466 kg → 0.45 molal

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

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