Potassium hydroxide dissolves and completely dissociates in water and a solvation sphere of water molecules forms around the ions. This solute-solvent interaction and makes the beaker warm.

A) absorbs energy from the surroundings
B) absorbs energy into the surroundings
C) releases energy into the surroundings
D) releases energy from the surroundings

1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c

Give the orbital configuration of the phosphorus (p) atom.

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.