Which phrase describes a microemulsion? A. A collection of oil molecules B. An agglomeration of l...
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Here emulsion means a colloidal mixture of two immiscible liquids by using emulsifying agent.Micro emulsion means liquid dispersion of water and oil become thermodynamically stable by addition of surfactant along with co surfactant and finally act as a drug delivary system.
From the above question option D describes most appropriate definition
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Which phrase describes a microemulsion? A. A collection of oil molecules B. An agglomeration of l...
Which is a characteristic of surface tension? a. The molecules of a liquid form a porous...
Which is a characteristic of surface tension? a. The molecules of a liquid form a porous network at the liquid’s surface. b. The molecules of a liquid attract each other enough to prevent penetration by other molecules. c. Surface tension is the same in various types of liquids. d. Surface tension is greater in a nonpolar covalent liquid than a polar covalent liquid. Between which species will ionic bonds be present? a. two ethanol molecules b. two chloride ions c....
Which kinds of molecules can form micelles? Select one: a. molecules of hydroxyl groups O b....
Which kinds of molecules can form micelles? Select one: a. molecules of hydroxyl groups O b. molecule of hydrophilic groups o c. molecule of hydrophobic groups d. molecules of amino groups. o e. molecules of both hydrophilic and hydrophobic molecules
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...
Which type of bond is the weakest bond between two atoms
21) Which type of bond is the weakest bond between two atoms:A) ionic bondB) covalent bondD) nonpolar bondE) hydrogen bond22) Look at the reaction below, fill in the blank with the correct number in order to balance the reaction:\(6 \mathrm{CO} 2+6 \mathrm{H} 2 \mathrm{O} \rightarrow \mathrm{C} 6 \mathrm{H} 1206+\)A) 2B) 4C) 60223) Which of the following statements below concerning water is not correct?A) composed of polar molecules.B) responsible for most of the mass of humansC) with low heat capacity:D) may...
1) A hydrogen bond is A) an attraction between a hydrogen atom attached to N, O, or F and an N, O, or Fatom on anot...
1) A hydrogen bond is A) an attraction between a hydrogen atom attached to N, O, or F and an N, O, or Fatom on anothe molecule. B) a covalent bond between H and O. c) an ionic bond between H and another atom. D) a bond that is stronger than a covalent bond. E) the polar O-H bond in water. 2) Which of the following molecules can form hydrogen bonds? A) CH4 B) NaH C) NH3 D) BH3 E)...
36. Which statement is true about Nucleic Acids? a) DNA is a protein b) DNA is...
36. Which statement is true about Nucleic Acids? a) DNA is a protein b) DNA is identical to RNA C) RNA has the structure of a double helix, d) RNA binds to DNA but not to amino acids. e) None of these are true. 37. Which is true for DNA, RNA and Polypeptides? a) They all have R groups, b) They are formed from ribose by dehydration synthesis. c) They all have subunits that include nitrogenous bases. d) They were...
i need help with #s 30-32 and can you check 28 and 29 28. Which of...
i need help with #s 30-32 and can you check 28 and 29
28. Which of the following is an isomer of CHOCH,? (a) CH.CH (b) CH,COOH (C) CH,CH,OH (4) CH,CH,CH, c) CH-CH,O CHỊCH, at atm? an a 29. Which of the following has the greatest solubility in C. H (a) SO (b) NaCl H.O. (d) CCIO JOT NH H - c-c- c-c-c- HHH 30. High solubility of an ionic solid in water is favored by which of the following...
A8. Which of the following describes carbohydrates? (a) a base, a sugar, and a phosphate b)...
A8. Which of the following describes carbohydrates? (a) a base, a sugar, and a phosphate b) aldchydes and ketones with two or more hydroxyl groups. c) acids with two or more hydroxyl groups. d) amines with two or more hydroxyl groups. e) always contain a phosphate group. A9. Which of the following is NOT correct regarding reducing sugars? a) Sugars that react with oxidizing agents are called reducing sugars. b) The cyclic form of a monosaccharide reacts with oxidizing agents....
1. Four elements make up 96% of the molecules involved chemical a) Oxygen, (0), b) Nitrogen...
1. Four elements make up 96% of the molecules involved chemical a) Oxygen, (0), b) Nitrogen (N), c) Carbon (C), d) Hydrogen (H) Ne in chemical evolution. Which of the following is not one of these? 2. During Chemical Evolution, elements reacted with each other to form sl norga compounds is thought to have been a critical solvent for elements and simple molec Oxygen ef Water molecules? a) Formaldehyde b) Carbon dloxide c) Ammonia d lipid bilayer was important because:...
1. Which of the following statements describes lipids? A) Lipids all have the steroid backbone. B)...
1. Which of the following statements describes lipids? A) Lipids all have the steroid backbone. B) The body stores excess calories as lipids. C) Lipids are insoluble in water, but soluble in nonpolar solvents. D) Lipids are soluble in water, but insoluble in nonpolar solvents. E) Lipids are insoluble in all solvents 2. Which of the following type of molecule is not a lipid? A) amino acid B) triglyceride C) phospholipid D) steroid E) eicosanoid 3. Which type of lipid...
Which kinds of molecules can form micelles? Select one: a. molecules of hydroxyl groups O b. molecule of hydrophilic groups o c. molecule of hydrophobic groups d. molecules of amino groups. o e. molecules of both hydrophilic and hydrophobic molecules
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...
1) A hydrogen bond is A) an attraction between a hydrogen atom attached to N, O, or F and an N, O, or Fatom on anothe molecule. B) a covalent bond between H and O. c) an ionic bond between H and another atom. D) a bond that is stronger than a covalent bond. E) the polar O-H bond in water. 2) Which of the following molecules can form hydrogen bonds? A) CH4 B) NaH C) NH3 D) BH3 E)...
36. Which statement is true about Nucleic Acids? a) DNA is a protein b) DNA is identical to RNA C) RNA has the structure of a double helix, d) RNA binds to DNA but not to amino acids. e) None of these are true. 37. Which is true for DNA, RNA and Polypeptides? a) They all have R groups, b) They are formed from ribose by dehydration synthesis. c) They all have subunits that include nitrogenous bases. d) They were...
i need help with #s 30-32 and can you check 28 and 29
28. Which of the following is an isomer of CHOCH,? (a) CH.CH (b) CH,COOH (C) CH,CH,OH (4) CH,CH,CH, c) CH-CH,O CHỊCH, at atm? an a 29. Which of the following has the greatest solubility in C. H (a) SO (b) NaCl H.O. (d) CCIO JOT NH H - c-c- c-c-c- HHH 30. High solubility of an ionic solid in water is favored by which of the following...
A8. Which of the following describes carbohydrates? (a) a base, a sugar, and a phosphate b) aldchydes and ketones with two or more hydroxyl groups. c) acids with two or more hydroxyl groups. d) amines with two or more hydroxyl groups. e) always contain a phosphate group. A9. Which of the following is NOT correct regarding reducing sugars? a) Sugars that react with oxidizing agents are called reducing sugars. b) The cyclic form of a monosaccharide reacts with oxidizing agents....
1. Four elements make up 96% of the molecules involved chemical a) Oxygen, (0), b) Nitrogen (N), c) Carbon (C), d) Hydrogen (H) Ne in chemical evolution. Which of the following is not one of these? 2. During Chemical Evolution, elements reacted with each other to form sl norga compounds is thought to have been a critical solvent for elements and simple molec Oxygen ef Water molecules? a) Formaldehyde b) Carbon dloxide c) Ammonia d lipid bilayer was important because:...
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