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Tools Fill a. Assume that the mass of a person is 70 kg and that 8%...
First name Last name Consider a solution prepared by dissolving 2.20 grams of Cach, in 500.ml...
First name Last name Consider a solution prepared by dissolving 2.20 grams of Cach, in 500.ml of water, then answer the questions below 1. How many moles of Cach are being used? 2. What is the mass of water being used? 3. What is the molality of the CaCl solution? 4. What is the van t'Hoff factor for the Caci? 5. What is the change (A) in the boiling point of the solution from that of pure water? 6. What...
The partial pressure of oxygen in the lung alveoli is a bit lower than in ambient...
The partial pressure of oxygen in the lung alveoli is a bit lower than in ambient air, being about 100 mm of mercury, or 0.13 Atm (it is lower than the partial pressure in air mainly because oxygen is continually taken up by the alveolar capillaries and carbon dioxide is continually released into the alveoli). In cell-free blood plasma (or a saline solution formulated to match key characteristics of blood plasma), which lacks red blood cells and therefore lacks hemoglobin,...
1. The LD50 of cocaine is 95.1 mg/kg. Calculate the concentration of a solution, in molarity...
1. The LD50 of cocaine is 95.1 mg/kg. Calculate the concentration of a solution, in molarity if they drank 1 liter of it. 100 g / 303.346 g/mol = 0.329 mol of cocaine. 0.329 mol/ 1 L= 0.329 M for molarity. Is this correct? 2. Find one other concentration unit [mass/mass (g/g) or mass/volume (g/ml) percentage, ppm or ppb] that would be toxic to a 85 kg person. Assume the density of a solution of your substance is the same...
PLEASE ANSWER ALL 10. What volume of 14N H2SO4 is needed to make 500 mL of...
PLEASE ANSWER ALL
10. What volume of 14N H2SO4 is needed to make 500 mL of 3.2M H2SO4 solution? 11. A solution contains 40 g of solute dissolved in 0.5 L of water. What is the percentage of this solution? 12. How many mL of 4M H2SO4 are required to make 1.5L of 0.5M acid? 13. 100mL of 8% NaCl solution contains g of NaCl 14. A liter of 0.95% solution of NaCl contains g of NaCl 15. 2500mL of...
You are required to make a solution that contains 50 mmoles of buffer (its molecular mass...
You are required to make a solution that contains 50 mmoles of buffer (its molecular mass is 121.1 g/mol), 300 mmoles of sodium chloride (its molecular mass is 58.44 g/mol), and 10% glycerol in a total volume of 0.75 L. Tell me (A) what weight of buffer and NaCl you will need, and (B) what volume of glycerol (diluted from a 100% stock concentration) you will need. Also, (C) what then makes up the additional volume to 0.75 L, and...
Total blood volume (in ml) per body weight (in kg) is important in medical research. For...
Total blood volume (in ml) per body weight (in kg) is important
in medical research. For healthy adults, the red blood cell volume
mean is about μ = 28 ml/kg.† Red blood cell volume that is
too low or too high can indicate a medical problem. Suppose that
Roger has had seven blood tests, and the red blood cell volumes
were as follows.
31
24
43
35
32
36
31
The sample mean is x ≈ 33.1 ml/kg. Let x...
Total blood volume (in ml) per body weight (in kg) is important in medical research. For...
Total blood volume (in ml) per body weight (in kg) is important in medical research. For healthy adults, the red blood cell volume mean is about μ = 28 ml/kg.† Red blood cell volume that is too low or too high can indicate a medical problem. Suppose that Roger has had seven blood tests, and the red blood cell volumes were as follows. 33 26 39 36 29 37 30 The sample mean is x ≈ 32.9 ml/kg. Let x...
(1) A 4m ladder has mass m= 10 kg. We assume that its centre of mass...
(1) A 4m ladder has mass m= 10 kg. We assume that its centre of mass is half-way along its length. The ladder is leaning against a wall at an angle of 30° from the vertical, as shown in the figure. Suppose that the wall is frictionless smooth and slippery), and that the coefficient of static friction between the feet of the ladder and the floor is H. =0.6. Take the acceleration due to gravity to be g=10m/s" directed vertically...
Assuming that the behavior of the gas is ideal. How much pressure would exercise 0.0468g of...
Assuming that the behavior of the gas is ideal. How much pressure would exercise 0.0468g of NH3 (molecular mass = 17 g / mol) on the walls of a container from 4.00L to 35.0oC? a) 0.0174 atm b) 0.296 atm c) 0.00198 atm d) 0.278 atm A sample of an unknown gas was added to a flask. It was heated in a water bath up to 100oC. When weighing the flask, the difference in weight was 0.504g and the volume...
Class Date Name 12. Through hematocrit determination, you can identify how much of the volume of...
Class Date Name 12. Through hematocrit determination, you can identify how much of the volume of a sample of blood is made up of red blood cells after the sample has been spun in a centrifuge. 13. In a tube of blood that has been spun in a centrifuge, the packed red blood cells are separated from the white blood cells by the buffy coat. 14. A hemocytometer is a special instrument that allows you to count microorganisms microscope. under...
First name Last name Consider a solution prepared by dissolving 2.20 grams of Cach, in 500.ml of water, then answer the questions below 1. How many moles of Cach are being used? 2. What is the mass of water being used? 3. What is the molality of the CaCl solution? 4. What is the van t'Hoff factor for the Caci? 5. What is the change (A) in the boiling point of the solution from that of pure water? 6. What...
PLEASE ANSWER ALL
10. What volume of 14N H2SO4 is needed to make 500 mL of 3.2M H2SO4 solution? 11. A solution contains 40 g of solute dissolved in 0.5 L of water. What is the percentage of this solution? 12. How many mL of 4M H2SO4 are required to make 1.5L of 0.5M acid? 13. 100mL of 8% NaCl solution contains g of NaCl 14. A liter of 0.95% solution of NaCl contains g of NaCl 15. 2500mL of...
Total blood volume (in ml) per body weight (in kg) is important
in medical research. For healthy adults, the red blood cell volume
mean is about μ = 28 ml/kg.† Red blood cell volume that is
too low or too high can indicate a medical problem. Suppose that
Roger has had seven blood tests, and the red blood cell volumes
were as follows.
31
24
43
35
32
36
31
The sample mean is x ≈ 33.1 ml/kg. Let x...
(1) A 4m ladder has mass m= 10 kg. We assume that its centre of mass is half-way along its length. The ladder is leaning against a wall at an angle of 30° from the vertical, as shown in the figure. Suppose that the wall is frictionless smooth and slippery), and that the coefficient of static friction between the feet of the ladder and the floor is H. =0.6. Take the acceleration due to gravity to be g=10m/s" directed vertically...
Class Date Name 12. Through hematocrit determination, you can identify how much of the volume of a sample of blood is made up of red blood cells after the sample has been spun in a centrifuge. 13. In a tube of blood that has been spun in a centrifuge, the packed red blood cells are separated from the white blood cells by the buffy coat. 14. A hemocytometer is a special instrument that allows you to count microorganisms microscope. under...
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