Water, pH and Macromolecules Which of the following statements about covalently bonded molecules is false? Electrons are shared between the atoms that make up the molecule The chemical bonds that hold the molecule together are relatively strong Such molecules often result from the interaction of ionized atoms Noncovalent bonds may also be present, especially if the molecule is large Electrons are shared between the atoms that make up the molecule The chemical bonds that hold the molecule together are relatively strong Such molecules often result from the interaction of ionized atoms Noncovalent bonds may also be present, especially if the molecule is large ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules What is the concentration, in moles/liter, of the hydrogen ion, if pH of a solution is 7? 7 x 10-7 1 x 10-7 7 5 x 10-7 7 x 10-7 1 x 10-7 7 5 x 10-7 ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The effectiveness or capacity of a buffer solution can be affected by both (a) and (b) concentration of the conjugate base to the weak acid molar concentration of the buffer components temperature of buffer components both (a) and (b) concentration of the conjugate base to the weak acid molar concentration of the buffer components temperature of buffer components ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Salt dissolves well in water as water molecules surround the ions because of their charge but do not form hydrogen bonds share electrons with the ions to make polar covalent bonds form hydrogen bonds with the positively and negatively charged ions make nonpolar covalent bonds with the positively charged ions only surround the ions because of their charge but do not form hydrogen bonds share electrons with the ions to make polar covalent bonds form hydrogen bonds with the positively and negatively charged ions make nonpolar covalent bonds with the positively charged ions only ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Which of the following alcohols would be most soluble in water? ethanol octanol methanol butanol ethanol octanol methanol butanol ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The pH of a solution is determined by environmental effect concentration of salt relative concentration of acids and bases dielectric constant of the medium environmental effect concentration of salt relative concentration of acids and bases dielectric constant of the medium ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS