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When the solvent is water, the energy-releasing step in the solvation process is referred Which of the following best describes how water molecules react with 7) Which type of molecular shape is shown by this molecule? Which statement best explains why water's boiling point is higher than Which statement correctly describes the behavior of valence electrons in this bond? what causes water molecules to have a bent shape, according to VSEPR

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This has the effect of drawing available water from within the food to the enzyme activity and weakening the molecular structure of its DNA. How do salt and sugar prevent microbial spoilage?Mickey Parish, chair of the Nutrition and Food Science Department at the University of Maryland, explains. Protection of foods from microbial spoilage using salt (usually sodium chloride) orThis variability in molecular bonding and shape allows carbon to exist in numerous compounds, exhibiting a number of Which statement best describes why life on earth is carbon based? The relationship between carbon and water.Which statement best describes an effect of the low density of frozen water in a lake A researcher noticed that a similar CH two molecular structure was also

Chemistry Unit 5 Test Flashcards | Quizlet

Which statement correctly explains the relative properties of the types of Gases have a definite volume, and flow to take the shape of their container. In ice, water molecules are held together by ______, and by London dispersion forces.Molecules making up water vapor have more energy and are more mobile than ice. Molecules Which statement correctly describes the structure of gases?How is the elaborate three-dimensional structure of proteins attained, and how is Reestablishing Correct Disulfide Pairing. In these cases, the unfolding protein molecules usually become tangled up with one another to form aggregates.Which of the following statements correctly describes a scientific hypothesis? Earth's gravity causes the moon to elongate, changing its shape. Which of the following describes the molecular changes that occur when water condenses?

- The solubility of a given solute in a solvent is determined by two primary components: the enthalpy alternate (ΔH) and the entropy trade (ΔS) of the solvation process.- In order to dissolve a substance, the bonds between the solute debris and the intermolecular forces inside the solvent must be broken. Both of those steps price energy (ΔH > 0). - Energy is launched as the solute and solvent come in combination and form new bonds with each and every different.- Whether or now not the solvation procedure is exothermic or endothermic depends upon the relative energies of the 3 steps of solvation.- When the solvent is water, the energy-releasing step in the solvation process is referred to as hydration. The enthalpy of hydration (ΔHhyd) is the calories launched by the formation of a cage of water molecules round an ion or molecule.- The magnitude of the enthalpy of hydration for an ion depends on the price and the size of the ion. More calories is launched from the hydration of smaller ions with higher fees.- Li + has a extra unfavorable ΔH hyd than Okay + because it is smaller and the water molecules can orient themselves nearer to the center of rate on the ion.- In basic, the blending of a solute with a solvent has a tendency to motive an build up in entropy. There are some solvation processes, alternatively, where there is a decrease in entropy as the solvent and solute become extra ordered.- The solvation of ions could cause larger ordering of a solvent. This loss of entropy is especially prevalent with small, extremely charged solutes. - Similarly, when a nonpolar solute is positioned in a polar solvent comparable to water, the water molecules will cluster around the nonpolar molecules and build up the order of the solvent. This phenomenon is referred to as the hydrophobic effect. The hydration of nonpolar molecules causes a big drop in entropy, with little exchange in enthalpy. Thus, nonpolar molecules have a tendency to not dissolve in water.