Water, pH and Macromolecules The elements oxygen, nitrogen, and carbon are common elements in the molecules that make up living organisms contain protons and neutrons in their atomic nuclei All of these can all form covalent bonds with other elements are common elements in the molecules that make up living organisms contain protons and neutrons in their atomic nuclei All of these can all form covalent bonds with other elements ANSWER DOWNLOAD EXAMIANS APP
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 Noncovalent bonds may also be present, especially if the molecule is large Such molecules often result from the interaction of ionized atoms Electrons are shared between the atoms that make up the molecule The chemical bonds that hold the molecule together are relatively strong Noncovalent bonds may also be present, especially if the molecule is large Such molecules often result from the interaction of ionized atoms 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 5 x 10-7 7 x 10-7 1 x 10-7 7 5 x 10-7 7 x 10-7 1 x 10-7 ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Weak acids generally have pKa been seldom found in living systems that cannot be used to buffer values less than 1 pKa values greater than 2 been seldom found in living systems that cannot be used to buffer values less than 1 pKa values greater than 2 ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules The strength of an acid depends on electronegativity number of protons released number of double bonds number of neutrons gain electronegativity number of protons released number of double bonds number of neutrons gain ANSWER DOWNLOAD EXAMIANS APP
Water, pH and Macromolecules Molecules in which the atoms are held together by __________ bonds have the strongest chemical linkages. noncovalent covalent ionic hydrogen noncovalent covalent ionic hydrogen ANSWER DOWNLOAD EXAMIANS APP
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