1. A round-bottomed boiling flask is used to heat 320 ml of blood (1 litre =...
1. A round-bottomed boiling flask is used to heat 320 ml of blood (1 litre = 1 x 10-3 m3) from 36 oC to 82 oC. The flask can be assumed to be a sphere of radius r = 5 cm which features a cylindrical neck with an inner diameter d = 3 cm.
a) A rubber bung is used to close off the flask, creating a column of air with a height h = 6 cm inside the neck. If blood has a coefficient of volumetric expansion of 20 x 10-6 K-1, calculate how far the liquid will reach from the bottom of the bung.
b) Assuming the gas trapped between the liquid and the bung remains at a constant temperature, calculate the pressure acting on the base of the bung when the blood reaches its maximum temperature. Atmospheric pressure may be assumed to be 1 x 105 Pa.
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1. A round-bottomed boiling flask is
used to heat 320 ml of blood (1 litre =...
The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitroge...
The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3 at 1 atm....
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pre...
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies, since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3...
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answer questions #1-7 and I'll send more information on question #7. We were unable to transcribe...
answer questions #1-7 and I'll send more information
on question #7.
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CHAPTER 9 REVIEW QUESTIONS 1. How much heat is required to raise the temperature of a...
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What are the desirable characteristics of a solvent to be used
in the recrystallisation of a solid product? (Hint: what is the
underlying purpose of doing recrystallisation, aside from making
the product look attractive?)
EXPERIMENT5 PREPARATION OF BENZOIC ACID Oxidation of a Primary Alcohol In this experiment, a primary alcohol (benzyl alcohol) is oxidised to a carboxylic acid (benzoic acid) by a strong oxidising agent (potassium permanganate) Because the synthesis reaction is carried out in basic conditions, the carboxylic acid...
The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3 at 1 atm....
P2) (50 pts.) The boiling temperature of nitrogen at atmospheric pressure at sea level (1 atm pressure) is -196°C. Therefore, nitrogen is commonly used in low-temperature scientific studies, since the temperature of liquid nitrogen in a tank open to the atmosphere will remain constant at -196°C until it is depleted. Any heat transfer to the tank will result in the evaporation of some liquid nitrogen, which has a heat of vaporization of 198 kJ/kg and a density of 810 kg/m3...
answer questions #1-7 and I'll send more information
on question #7.
We were unable to transcribe this imagesolution of a Mixture by Distillation 4 BACKGROUND s one of the most common methods of purifyinga ery simple method: a liquid is brought to a boil, the liquid becomes a gas the gas a liquid. It is a collected returns to the liquid state and the liquid acquire sufficient e from the liquid phase and enter into the s vapor phase Evaporation...
1. Procedure A. Lithium 2,6-dimethylphenoxide. In a 300-ml. flask, equipped with a magnetic stirrer and a reflux condenser and flushed with nitrogen, are placed 150 ml. of toluene (freshly distilled from sodium), 1.40 g. (0.202 mole) of lithium metal (Note 1) and 25.0 g. (0.205 mole) of resublimed 2,6-dimethylphenol. The mixture is heated under reflux with stirring for 36 hours; a nitrogen atmosphere is maintained for the reflux period (Note 2). The condenser is replaced by a distillation head with...
CHAPTER 9 REVIEW QUESTIONS 1. How much heat is required to raise the temperature of a 0.04 kg stainless steel spoon from 20°C to 50°C if the specific heat of stainless steel is 0.50 kJ/kg-C? (A) 200 (B) 400 (C) 600 (D) 800) (E) 2000 5. An ideal gas is confined to a container whose volume is fixed. If the container holds n moles of gas, by what factor will the pressure increase if the absolute temperature is increased by...
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8. [-14 Points] DETAILS SERPSE10 30.1.OP.008.CTX. MY NOTES ASK YOUR TEACHER You are a technician at an MRI center. One day some medical students enter your lab for a training session. One of them asks about metal in the MRI room, and you clearly state that that is a dangerous situation. The questioner does not look convinced, so you provide the following example. Suppose a woman enters the MRI machine and has forgotten to remove a silver choker necklace. The...
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the product look attractive?)
EXPERIMENT5 PREPARATION OF BENZOIC ACID Oxidation of a Primary Alcohol In this experiment, a primary alcohol (benzyl alcohol) is oxidised to a carboxylic acid (benzoic acid) by a strong oxidising agent (potassium permanganate) Because the synthesis reaction is carried out in basic conditions, the carboxylic acid...
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