A solution is prepared by dissolving aluminum chloride in water and diluting to 500.0 mL. If...
A solution is prepared by dissolving aluminum chloride in water and diluting to 500.0 mL. If this solution contains 44 ppm aluminum ions, the concentration of chloride ions is ppm.
A) 11
B) 22
C) 44
D) 88
E) 132
Red-blood cells comprise an outer semi-permeable membrane, and are subject to osmosis. If local solute concentration inside the cells is higher than that outside:
A) no net solvent migration will occur
B) solvent will migrate from inside the cell to the outside but not from outside in
C) solvent will migrate faster into the cell than out of it causing the cell to burst
D) solvent will migrate faster out of the cell than into it causing the cell to crumple
Homework Answers
Question 1.
The answer is option E.
Explanation: AlCl3 ----> Al3+ + 3Cl-
[Al3+] = 44 ppm
Therefore, [Cl-] = 3×44 ppm = 132 ppm
Question 2.
The answer is option C.
Explanation: Osmosis is the process in which solvent molecules pass from low concentration to high concentration through a semi-permeable membrane. Hence, in the given case, solvent will migrate faster into the cell than out of it because the concentration of solute inside the cell is higher than that outside the cell.
Add Answer to:
A solution is prepared by dissolving aluminum chloride in water
and diluting to 500.0 mL. If...
the concentration in %(m/v) of a solution prepared by dissolving 50.0 sucrose in 220 mL of...
the concentration in %(m/v) of a solution prepared by dissolving 50.0 sucrose in 220 mL of ethanol. hat is the concentration in ppm of a solution that contains 0.234 g of lactic acid dissolved in 350 mL of aqueous solution? h) How many grams of glucose are present in 850 mL of a 4.25%(m/v) glucose solution. 8. The following questions involve calculations of equivalents or miliequivalents. a) How many equivalents of sodium ion and sulfate ion are present in a...
Why? How do water morcules move in and out of cells counts for over 70% of...
Why? How do water morcules move in and out of cells counts for over 70% of the human body. If water levels are not regulated and maintained in an is the consequences can be disastrous. Cells and tissues may well, blood cells burst, or the brain muy expand so much it pushes on the skull, leading to brain damage and death. So what exactly is the process that allows organisms to regulate and maintain their water content? Model 1 -...
I need help with filling out the chart in the second picture, the first photo is...
I need help with filling out the chart in the second picture,
the first photo is the data needed to answer the questions
Figure 4.7 Osmosis demonstration. Athistle tube, covered at the broad end by a differential contains distilled water. b. The solute (starch is unable to pass the through in both directions. There is a net movement of water town and lower water concentration. c. Due to the incomi ally permeable membrane, contains a arch o n through the...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface of the membrane. Net movement of particles from a region where they are more concentrated to a region where they are law concentrated is called Diffusion of water through a selectively permeable membrane down its own concentration gradient It called A solution with an equivalent concentration of water and hence the tame osmotic pressure as the fluid inside the cell is said to be...
Consider an aqueous solution, prepared by adding the following four components, and diluting to a total...
Consider an aqueous solution, prepared by adding the following four components, and diluting to a total volume of 0.250 L: - 5.00 mmol of sodium phenoxide (NaPh) *Phenol, HPh: pKa = 9.997 -1.00 mmol of acetic acid (HAC) *Acetic acid, HAC: pKa = 4.756 - 3.50 mmol ammonium chloride (NH4CI) *Ammonium, NH4+: pKa = 9.245 - 10.0 mmol NaCl a) Write balanced equations for each of the chemical reactions for all the equilibria present in this solution. b) Excluding solvent,...
4. Colligative Properties: Consider the following solutions: 1) pure water, and 2) a 0.100 M solution...
4. Colligative Properties: Consider the following solutions: 1) pure water, and 2) a 0.100 M solution of NaCl. Answer the following questions by circling the correct answer, and then explaining your choice (with words or pictures). 0.100 M NaCl soln pure water [A] Which has the lower freezing point? 0.100 M NaCl soln [B] Which has the lower boiling point? pure water (C) Which has the higher vapour pressure? pure water 0.100 M NaCl soln 5. Osmosis: Draw a picture...
One mole of sodium chloride is added to 100 ml of water in beaker A. One...
One mole of sodium chloride is added to 100 ml of water in beaker A. One mole of glucose, C_6H_12O_6, is added to 100ml of water in beaker B. How much more will the freezing point of water be lowered in beaker A than in beaker B? Two thirds as much twice as much three times as much Beakers A and B will experience the same degree of freezing point depression. It is impossible to determine. Which of the following...
Just answer part 2 and 3 please (0.3 point) Part 1 ii See Periodic TableSee Hint A solution is created by dissolving 12.5 grams of ammonium chloride in enough water to make 355 mL of solution. How ma...
Just answer part 2 and 3 please
(0.3 point) Part 1 ii See Periodic TableSee Hint A solution is created by dissolving 12.5 grams of ammonium chloride in enough water to make 355 mL of solution. How many moles of ammonium chloride are present in the resulting solution? moles of NH4CI 0.233 When chemists work with solid materials, we simply weigh out amounts of solid reagents and calculate mole amounts when thinking about stoichiometry. However, when we dissolve a solid...
CRITICAL THINKING QUESTIONS 1. A pre-weighed dialysis bag which contained a solution of 10% glucose was...
CRITICAL THINKING QUESTIONS 1. A pre-weighed dialysis bag which contained a solution of 10% glucose was placed in a beaker containing a solution of 20% glucose. After one hour, the bag was weighed again a. Calculate the % mass change of this dialysis bag from the following information: • Mass of bag before experiment: 15.39 • Mass of bag after experiment: 12.79 b. Determine the tonicity of the beaker when it is compared to the dialysis bag: 2. facell had...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion of _________________ hydrocarbon tails, enabling them to stay fluid.For example, cold-adapted organisms such as winter wheat increase the percentage of _________________ phospholipids in their membranes in the autumn to prevent the membranes from solidifying during winter.There are two major populations of membrane proteins: ___________ and _____________.Integral proteins penetrate the hydrophobic interior of the lipid bilayer, usually completely spanning the membrane as ________________ proteins.________________ proteins...
the concentration in %(m/v) of a solution prepared by dissolving 50.0 sucrose in 220 mL of ethanol. hat is the concentration in ppm of a solution that contains 0.234 g of lactic acid dissolved in 350 mL of aqueous solution? h) How many grams of glucose are present in 850 mL of a 4.25%(m/v) glucose solution. 8. The following questions involve calculations of equivalents or miliequivalents. a) How many equivalents of sodium ion and sulfate ion are present in a...
Why? How do water morcules move in and out of cells counts for over 70% of the human body. If water levels are not regulated and maintained in an is the consequences can be disastrous. Cells and tissues may well, blood cells burst, or the brain muy expand so much it pushes on the skull, leading to brain damage and death. So what exactly is the process that allows organisms to regulate and maintain their water content? Model 1 -...
I need help with filling out the chart in the second picture,
the first photo is the data needed to answer the questions
Figure 4.7 Osmosis demonstration. Athistle tube, covered at the broad end by a differential contains distilled water. b. The solute (starch is unable to pass the through in both directions. There is a net movement of water town and lower water concentration. c. Due to the incomi ally permeable membrane, contains a arch o n through the...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface of the membrane. Net movement of particles from a region where they are more concentrated to a region where they are law concentrated is called Diffusion of water through a selectively permeable membrane down its own concentration gradient It called A solution with an equivalent concentration of water and hence the tame osmotic pressure as the fluid inside the cell is said to be...
Consider an aqueous solution, prepared by adding the following four components, and diluting to a total volume of 0.250 L: - 5.00 mmol of sodium phenoxide (NaPh) *Phenol, HPh: pKa = 9.997 -1.00 mmol of acetic acid (HAC) *Acetic acid, HAC: pKa = 4.756 - 3.50 mmol ammonium chloride (NH4CI) *Ammonium, NH4+: pKa = 9.245 - 10.0 mmol NaCl a) Write balanced equations for each of the chemical reactions for all the equilibria present in this solution. b) Excluding solvent,...
4. Colligative Properties: Consider the following solutions: 1) pure water, and 2) a 0.100 M solution of NaCl. Answer the following questions by circling the correct answer, and then explaining your choice (with words or pictures). 0.100 M NaCl soln pure water [A] Which has the lower freezing point? 0.100 M NaCl soln [B] Which has the lower boiling point? pure water (C) Which has the higher vapour pressure? pure water 0.100 M NaCl soln 5. Osmosis: Draw a picture...
One mole of sodium chloride is added to 100 ml of water in beaker A. One mole of glucose, C_6H_12O_6, is added to 100ml of water in beaker B. How much more will the freezing point of water be lowered in beaker A than in beaker B? Two thirds as much twice as much three times as much Beakers A and B will experience the same degree of freezing point depression. It is impossible to determine. Which of the following...
Just answer part 2 and 3 please
(0.3 point) Part 1 ii See Periodic TableSee Hint A solution is created by dissolving 12.5 grams of ammonium chloride in enough water to make 355 mL of solution. How many moles of ammonium chloride are present in the resulting solution? moles of NH4CI 0.233 When chemists work with solid materials, we simply weigh out amounts of solid reagents and calculate mole amounts when thinking about stoichiometry. However, when we dissolve a solid...
CRITICAL THINKING QUESTIONS 1. A pre-weighed dialysis bag which contained a solution of 10% glucose was placed in a beaker containing a solution of 20% glucose. After one hour, the bag was weighed again a. Calculate the % mass change of this dialysis bag from the following information: • Mass of bag before experiment: 15.39 • Mass of bag after experiment: 12.79 b. Determine the tonicity of the beaker when it is compared to the dialysis bag: 2. facell had...
Most questions answered within 3 hours.
-
Hello, regarding the photoelectric effect I had a couple
questions:
Red light is shining on a...
asked 12 minutes ago -
build a sample navigation Sprite in css ?
asked 10 minutes ago -
Please write a C# program for an concert sale with the
requirements below in Console Form:...
asked 13 minutes ago -
use linux follow instructions , put the commands at each step
and screenshot at each step...
asked 27 minutes ago -
Suppose producer’s production function let q(K, E) =
K0.5E0.5
Suppose producer’s cost function if w=w’ and...
asked 22 minutes ago -
Using the information given below for the fictitious country
"Alpha," find the national saving rate.
...
asked 13 minutes ago -
What is the advantage(s) of using iPS instead of ES cells for stem
cell therapies?
asked 23 minutes ago -
1. The return on assets
(ROA) for XYZ Hospital Systems Inc, below, for the year 20XX
was...
asked 26 minutes ago -
Chelsea, a vegan woman, has just found out she is pregnant. What
nutrient deficiencies are common...
asked 22 minutes ago -
1.
In the laws of optics experiment, a student measured the
intensity of a light source...
asked 30 minutes ago -
What is the length of a box in which the minimum energy of an
electron is...
asked 32 minutes ago -
A Government of Canada bond will pay $50 at the end of every six
months for...
asked 32 minutes ago