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What is the mass of 2.50 LL of pure water?
What is the mass of 2.50 LL of whole blood?
What is the mass of 2.50 LL of seawater?
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- A. What is the mass of 2.00L of pure water? B. What is the mass of 2.00L of whole blood? C. What is the mass of 2.00L of seawater?The following is a practice question for an upcoming test: At a resting pulse rate of 77 beats per minute, the human heart typically pumps about 73 mL of blood per beat. Blood has a density of 1060 kg/m3. Circulating all of the blood in the body through the heart takes about 1 min for a person at rest. On average, what mass of blood does the heart pump with each heart beat in kg? mass per heart beat:3. A man weighs 690 N and contains blood that is about 0.0052 m^3. Blood's density is known to be 1 060 kg/m^3. Express the percentage of body weight contributed by the blood. 980% 1 278% 7.84% 1 275% 7.83% 10.2%
- 1. A person contains 8.0 L of blood. Blood is composed of 55% plasma and 45% blood cells by volume. The density of blood plasma is approximately 1025 kg/m^3 and the density of blood cells circulating in the blood is approximately 1125 kg/m^3. Determine the mass of the plasma and the blood cells in 8.0 L of human blood. (Hint: 1 L = 0.001 m^3)A piece of metal is placed in an empty sample bottle. The mass of the bottle + metal is 43.64g. With the metal left inside, the bottle is filled to capacity with water. The combined mass of the bottle, metal, and water is 61.44g. Assuming that the density of the water is 0.9976g/cm^3 A. calculate the mass of the metal B. Calculate the mass of water C. Calculate the volume of water D. Calculate the volume of the metal piece E. Calculate the density of the metal pieceA person contains 7 L of blood. Blood is composed of 55 percent plasma and 45 percent blood cells by volume. The density of the blood plasma is approximately 1025 kg/m3 and the density of blood cells circulating in the blood is approximately 1125 kg/m3. Determine the mass of (a) plasma and (b) blood cells in seven liters of human blood.
- The British gold sovereign coin is an alloy of gold and copper having a total mass of 7.988 g, and is 22-karat gold (a) Find the mass of gold in the sovereign in kilograms using the fact that the number of karats = 24 ✕ (mass of gold)/(total mass). kg (b) Calculate the volumes of gold and copper, respectively, used to manufacture the coin. volume of gold m3 volume of copper m3 (c) Calculate the density of the British sovereign coin.An empty food can has a mass of 64.87 grams. You fill it with 13.38mL of juice. The total mass of the can is 123.83grams what is the density of juice in g/L *(1L=1000cm^3)An iron casting containing a number of cavities weighs 6.61E+3N in air and 3.61E+3N in water. What is the total volume of all the cavities in the casting? The density of iron (that is, a sample with no cavities) is 7.87 g/cm?. Number Units
- Determine the erythrocyte sedimentation rate assuming that the erythrocytes have a spherical shape with a diameter of 8 microns. Take the blood density 1060 kg/m3, the density of the substance of erythrocytes 1090 kg/m3.Janice is grilling a steak for her July 4th barbecue dinner. The steak initially weighs 300 grams and is 25 mm thick. After grilling it for a while, she considers the steak done, and measures it again: it now weighs 215 grams, and is 15 mm thick. For both the cooked and uncooked steak, she uses the thumb-test to determine the done-ness, i.e. she uses her thumb (area ~5cm2) to push down with a force of 5 N. The uncooked steak compresses by 7 mm, and the cooked steak by 2 mm. The change in elasticity of the steak on cooking is due partly to the loss of water volume (so that existing bonds get closer together) and partly to the creation of new bonds. Assume all of the difference in raw vs. cooked steak thickness is due to water loss that makes it thinner (25 mm thick in the uncooked steak, versus 15 mm thick in the cooked steak), and that the other dimensions of the steak (length and width) have not changed. By what percentage has the steak's volume decreased from the original value?…Janice is grilling a steak for her July 4th barbecue dinner. The steak initially weighs 300 grams and is 25 mm thick. After grilling it for a while, she considers the steak done, and measures it again: it now weighs 215 grams, and is 15 mm thick. For both the cooked and uncooked steak, she uses the thumb-test to determine the done-ness, i.e. she uses her thumb (area ~5cm2) to push down with a force of 5 N. The uncooked steak compresses by 7 mm, and the cooked steak by 2 mm. Calculating elasticity What is the elasticity of the raw steak? Express your answer in Pascals but without including the units in your answer. What is the elasticity of the cooked steak? Express your answer in Pascals, but without including the units.
