During a constant-pressure process, the system releases heat to the surroundings. does the enthalpy of the system increase or de
1 answer:
You might be interested in
<u>Answer:</u> The molality of barium chloride solution is 0.289 m
<u>Explanation:</u>
To calculate the mass of water, we use the equation:
Density of water = 1 g/mL
Volume of water = 748 mL
Putting values in above equation, we get:
To calculate the molality of solution, we use the equation:
where,
= Given mass of solute (barium chloride) = 45.0 g
= Molar mass of solute (barium chloride) = 208.23 g/mol
= Mass of solvent (water) = 748 g
Putting values in above equation, we get:
Hence, the molality of barium chloride solution is 0.289 m
PLA is a type of condensation polymer. Hydroxyl group of one lactic acid reacts with carboxylic group of second lactic acid and a ester is formed with the elimination of water molecule. And the reaction propagates with the increase in chain. And, the product formed is PLA as shown below.
