Match each term with its definition. the position of an equilibrium always shifts in such a direction as to relieve a stress applied to the system. a molecule that donates a proton when it encounters a proton acceptor. occurs when a reaction involving an acid and its conjugate base is combined with a second reaction involving a base and its conjugate acid. it ionizes completely when dissolved in water. the shift in the position of equilibrium caused by the addition of a participating ion. it only partially ionizes when dissolved in water. it is capable of acting as either an acid or a base depending upon the solute. the act of self-ionization of a solvent to produce both a conjugate acid and a conjugate base. a chemical species that bears both positive and negative charges.

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

What is the molar mass of a gas that has density of 2.054 g/l

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes. which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature. sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent