A 101 g of an unknown metal at 50 o C is placed in 40 g of water at 25.0 o C (C p for water is 1 cal/g o C). The temperature of the system at equilibrium is 29.7 o C. What is the unknown metal?

2b2t

explanation:

2b2t

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

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.