When silver nitrate (agno3) dissolves in water, the temperature of the solution decreases. describe the relative magnitudes of hsolute + ehsolvent and hmix. explain your answer. the enthalpy of solution for agno3 is positive because the temperature of the solution decreases (the dissolution is endothermic).hsol = hsolute + hsolvent + hmixhsolute and hsolvent are endothermic because energy is required to overcome intermolecular forces and separate solute and solvent particles. hmix is exothermic because energy is released when intermolecular forces form between solute and solvent particles. if the overall enthalpy of solution is positive, then hsolute + hsolvent must be larger in magnitude than hmix.

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;