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answer questions 15 through 20
15. For crystal lattice where dimension, a = b = c...
14. If the molar mass of toluene is 925 gmol, how much toluene is needed to...
14. If the molar mass of toluene is 925 gmol, how much toluene is needed to depress the freezing point of 200 g of benzene by 0.47°C? K 5 .12"C/m A 1.79 B. 179 C.0.0.919 D. 18.359 E. Not enough information given to answer 15. For crystal lattice where dimension, a b=cand also all angles a Bay = 90° represents: B. cubic A tetragonal tetragonal D. orthorhombic E both A and C 16. Consider the compounds water (HO). dimethylether (CH,OCH),...
Е. попе E. 0.733 and 1.324 14. the molar mass of toluene is 92.6 gmol, how much tokuene is needed to depress the fr...
Е. попе E. 0.733 and 1.324 14. the molar mass of toluene is 92.6 gmol, how much tokuene is needed to depress the freezing point of 200 g of benzene by 047C? K 5.12 Cm a The vapor pressure of pure water at 26 "C is 25.2 torr. What is he vapor pressure of a solution that contains 16.0 g of glucose (CaHuO) dissolved in 80 g of water? A. 1.7g A. 14.1 tor B. 17g B. 24.7 torm C....
Match the following concepts: a. Crenation c. Plasmolysis b. Hemolysis d. Turgor pressure e) Osmosis 86)...
Match the following concepts: a. Crenation c. Plasmolysis b. Hemolysis d. Turgor pressure e) Osmosis 86) B 87) 88) 89) 90) Bursting of red blood cells when placed in a hypotonic solution Wilting of plant cells when placed in a hypertonic environment Fluid pressure on cell wall Shrinking of red blood cells when placed in hypertonic solids Movement of water across a selectively permeable membrane ving concepts:
25) In the process known as osmosis, concentration. A) solute; lower solute D) solvent; lower solvent moves through...
25) In the process known as osmosis, concentration. A) solute; lower solute D) solvent; lower solvent moves through a semipermeable membrane into an area o B) solute; higher solute E) solvent; higher solvent C) solvent; lower solute 26) A solution that has an osmotic pressure less than that of red blood cells is called A) saturated. B) hypertonic. C) isotonic. D) hypotonic. E) unsaturated 27) A red blood cell will undergo crenation in A) water. B) 0.5% NaCl. C) 3%...
> The expenditure of ATP when material is passing through any cell is known as: a)...
> The expenditure of ATP when material is passing through any cell is known as: a) active transport b) passive transport phagocytosis d) endocytosis osmosis Which of the following is true of hypertonic solutions: a) lower concentration of solutes than the cell b) greater concentration of solutes than the cell causes water to flood into cells an equal concentration of solutes than the cell both a and care correct choices Which of the following is true of hypotonic solutions: a)...
5)Sunflowers are both ________. a)heterotrophs and producers b)autotrophs and producers c)producers and decomposers d)heterotrophs and consumers...
5)Sunflowers are both ________. a)heterotrophs and producers b)autotrophs and producers c)producers and decomposers d)heterotrophs and consumers 6)A karyotype (a display of the chromosomes in a cell) is often used to look for genetic disorders. Karyotype results would NOT be useful to determine ________. a)Down syndrome b)sex c)Turner syndrome d)eye color 7)During Prophase I, ________. a)sister chromatids migrate to opposite poles b)crossing over occurs c)homologous chromosomes line up in the middle of the cell d)the nuclear envelope breaks up 8)Which molecule...
10. Biological systems are A) Open; B) Closed; C) Isolated; D) At equilibrium; E) Eternal. e...
10. Biological systems are A) Open; B) Closed; C) Isolated; D) At equilibrium; E) Eternal. e AGo (in kl/mol) for the reaction: A + BC. D at 25 oC, when the equilibrium concentrations are [A] 5 HM, [B) 3 HM, [C] -15 uM, [D] 10 uM (R81 A) +5.7 k]/mol; B) 5.7 k]/mol: c) +2.3 k]/mol: D) 2.3 k]/mol: E) 0.1 k]/mol. 12. Which of the following is true? A) Hydrogen bonding is a major factor in the structure of...
21. The ______ prevents plants cells from bursting when place in a ____ solution. a) centrioles-hypotonic...
21. The ______ prevents plants cells from bursting when place in a ____ solution. a) centrioles-hypotonic b) chloroplasts-hypertonic c) plasma membrane-hypertonic d) vacuole-hypertonic e) cell wall-hypotonic 22. Specialized cells like your own lung cells each lack which of the following organelles which are commonly found in an onion. a) cell membrane b)cell wall c)ribosomes d)nucleolus e) none of the above ______ 23. White blood cells engulf and destroy foreign particles by a process known as phagocytosis which is actually a)...
Questions I a) What is osmosis? b) What is dialysis? Can MgSO4 pass through? Explain. 2....
Questions I a) What is osmosis? b) What is dialysis? Can MgSO4 pass through? Explain. 2. Can starch pass through a dialyzing membrane? (Support your claim with evidence from the experiment.) 3. Explain why people who are adrift in a lifeboat without a supply of fresh water are advised not to drink ocean water. note - Ocean water is saltier than body fluids like blood plasma. 4. In terms of osmosis, what happens when fresh water is inhaled into a...
B. 0.20 M C. 5.0 M D. 100M 100. A 250-ml sample of a 0.250 M...
B. 0.20 M C. 5.0 M D. 100M 100. A 250-ml sample of a 0.250 M glucose solution contains how much glucose? Glucose has a molar mass of 180 g/mol A. 11,2505 B. 180 C. 2.888 D. 1123 101. A salt solution is made by adding 25.5 g of salt to 135 ml of solution. What is the [w/v) of the salt solution? A. 18.9% B. 5.29% C. 110% D. 15.9% 102. How much of a 35.0X(w/v) glucose solution would...
14. If the molar mass of toluene is 925 gmol, how much toluene is needed to depress the freezing point of 200 g of benzene by 0.47°C? K 5 .12"C/m A 1.79 B. 179 C.0.0.919 D. 18.359 E. Not enough information given to answer 15. For crystal lattice where dimension, a b=cand also all angles a Bay = 90° represents: B. cubic A tetragonal tetragonal D. orthorhombic E both A and C 16. Consider the compounds water (HO). dimethylether (CH,OCH),...
Е. попе E. 0.733 and 1.324 14. the molar mass of toluene is 92.6 gmol, how much tokuene is needed to depress the freezing point of 200 g of benzene by 047C? K 5.12 Cm a The vapor pressure of pure water at 26 "C is 25.2 torr. What is he vapor pressure of a solution that contains 16.0 g of glucose (CaHuO) dissolved in 80 g of water? A. 1.7g A. 14.1 tor B. 17g B. 24.7 torm C....
Match the following concepts: a. Crenation c. Plasmolysis b. Hemolysis d. Turgor pressure e) Osmosis 86) B 87) 88) 89) 90) Bursting of red blood cells when placed in a hypotonic solution Wilting of plant cells when placed in a hypertonic environment Fluid pressure on cell wall Shrinking of red blood cells when placed in hypertonic solids Movement of water across a selectively permeable membrane ving concepts:
25) In the process known as osmosis, concentration. A) solute; lower solute D) solvent; lower solvent moves through a semipermeable membrane into an area o B) solute; higher solute E) solvent; higher solvent C) solvent; lower solute 26) A solution that has an osmotic pressure less than that of red blood cells is called A) saturated. B) hypertonic. C) isotonic. D) hypotonic. E) unsaturated 27) A red blood cell will undergo crenation in A) water. B) 0.5% NaCl. C) 3%...
> The expenditure of ATP when material is passing through any cell is known as: a) active transport b) passive transport phagocytosis d) endocytosis osmosis Which of the following is true of hypertonic solutions: a) lower concentration of solutes than the cell b) greater concentration of solutes than the cell causes water to flood into cells an equal concentration of solutes than the cell both a and care correct choices Which of the following is true of hypotonic solutions: a)...
10. Biological systems are A) Open; B) Closed; C) Isolated; D) At equilibrium; E) Eternal. e AGo (in kl/mol) for the reaction: A + BC. D at 25 oC, when the equilibrium concentrations are [A] 5 HM, [B) 3 HM, [C] -15 uM, [D] 10 uM (R81 A) +5.7 k]/mol; B) 5.7 k]/mol: c) +2.3 k]/mol: D) 2.3 k]/mol: E) 0.1 k]/mol. 12. Which of the following is true? A) Hydrogen bonding is a major factor in the structure of...
Questions I a) What is osmosis? b) What is dialysis? Can MgSO4 pass through? Explain. 2. Can starch pass through a dialyzing membrane? (Support your claim with evidence from the experiment.) 3. Explain why people who are adrift in a lifeboat without a supply of fresh water are advised not to drink ocean water. note - Ocean water is saltier than body fluids like blood plasma. 4. In terms of osmosis, what happens when fresh water is inhaled into a...
B. 0.20 M C. 5.0 M D. 100M 100. A 250-ml sample of a 0.250 M glucose solution contains how much glucose? Glucose has a molar mass of 180 g/mol A. 11,2505 B. 180 C. 2.888 D. 1123 101. A salt solution is made by adding 25.5 g of salt to 135 ml of solution. What is the [w/v) of the salt solution? A. 18.9% B. 5.29% C. 110% D. 15.9% 102. How much of a 35.0X(w/v) glucose solution would...
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