A student measures a boiling water bath with two different thermometers. The digital thermometer records the...
A student measures a boiling water bath with two different thermometers. The digital thermometer records the temperature as 100.2°C and has an uncertainty of 0.1°C. The analog thermometer records the temperature as 99.0°C and has an uncertainty of 0.5°C. What is the percent uncertainty of each thermometer? And what is the percent error given that water boils at 100.0°C?
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A student measures a boiling water bath with two
different thermometers. The digital thermometer records the...
14. Your thermometer, when calibrated reads 102˚C in boiling water and -1˚C in an ice bath....
14. Your thermometer, when calibrated reads 102˚C in boiling water and -1˚C in an ice bath. Explain how you would correct for your thermometer’s inaccuracy in each of the following cases. a. You wish to concentrate a sucrose solution so that it boils at 110˚C. b. You wish to record the correct boiling point of a liquid that boils when your thermometer reads 96˚C. c. You wish to record the correct freezing point of a solution that freezes when your...
2) A student boils a metal block for 2 minutes and the temperature of the boiling...
2) A student boils a metal block for 2 minutes and the temperature of the boiling water is 105.1 °C. the metal block has a mass of 250.42 g. The metal object is removed from the boiling water and submerged in 130.00 mL of water at 23.7 °C. The equilibrium temperature was 36.9 °C. a) Assuming no heat was lost to the surrounding, determine the specific heat capacity of the metal. (6 points) b) Calculate the percent error if the...
A student places 50.0 g of lead, Pb, in boiling water. After several minutes, the student...
A student places 50.0 g of lead, Pb, in boiling water. After several minutes, the student quickly removes the lead and places it into a coffee cup calorimeter containing 100.0 g water at an initial temperature of 27.2°C. If the final temperature of the lead and water together is 28.3°C, what is the specific heat of the metal?
A student designed his experiment based on Dumas method to determine the molecular 5 Pts mass...
A student designed his experiment based on Dumas method to determine the molecular 5 Pts mass of an unknown volatile liquid and tabulated the data obtained from his cxpcriment. From the given data calculate the Molar mass of the unknown liquid and percent error if the accepted molar mass is Y g/mol. Q8. Mass of flask, boiling stone, foil cap, & unknown liquid after cooling Mass of flask, boiling stone and foil cape Water bath temperature Barometric pressure Volume of...
please answer all questions O The Hong Kong Polytechnic University Section A 1. (a) A digital thermometer is designed to measure temperature ranging from 20°C to 45°c. 0) Describe the two steps in...
please answer all questions
O The Hong Kong Polytechnic University Section A 1. (a) A digital thermometer is designed to measure temperature ranging from 20°C to 45°c. 0) Describe the two steps involved in the digitization of analog signals (4 marks) (i) If the quantization error is required to be less than O. I C, how many bits are required to encode the temperature readings? (4 marks) (ii)What is the temperature reading of 26.S°C in binary form after the digitization?...
cork thermometer plastic lid ← stirrer insulator ring reservoir ice and water aluminum container Figure 5.1:...
cork thermometer plastic lid ← stirrer insulator ring reservoir ice and water aluminum container Figure 5.1: A Simple Calorimeter In the other direction, when the phase change is from liquid to solid, the sample must release the same amount of energy. For water at its normal freezing or melting temperature, Lf=79.5 cal/g = 333 kJ/kg (5.2) This lab employs a double-wall calorimeter as shown in Figure 5.1 to measure the heat of fusion for ice. The calorimeter consists of an...
i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone)...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
Student Course Home royinstruct 72/quizzes/285228/take uestion9 10 pts You add 0.500 kg of water to the...
Student Course Home royinstruct 72/quizzes/285228/take uestion9 10 pts You add 0.500 kg of water to the blender and run the blender for 20.0 seconds. The water's initial temperature is 20.00P C its final temperature is 25.00P C. How much heat has been added to the water, in J? The total heat added to the water is J.(You should calculate this to 3 significant figures). D Question 10 10 pts You add 0.500 kg of water to the blender and run...
9,10,11,12,13,14, and 15 please a syringe is filled with 40. mL. of air at room temperature (22°C) in the lab and then this syringe is placed into a boiling water bath. After S minutes, the volum...
9,10,11,12,13,14, and 15 please
a syringe is filled with 40. mL. of air at room temperature (22°C) in the lab and then this syringe is placed into a boiling water bath. After S minutes, the volume of gas in in the syringe (still at lab pressure) should be close to which volume? 9. Which of these is a true statement about a below a tube that is filled with a liquid such as mercury b. The weight of the liquid...
This is a practice quiz and I want to make sure I have the correct answers,...
This is a practice quiz and I want to make sure I have the
correct answers, please help! thank you!
In
the text I said it was a practice quiz
1. Liquid aluminum will crystalize with a face-centered cubic (fce) unit cell. Face-centered cubic unit cells contain 8 atoms per unit cell. Determine the density of solid aluminum if the radius of an aluminum atom is measured to be 143 pm. (Hint: Calculate the mass and volume to determine the...
2) A student boils a metal block for 2 minutes and the temperature of the boiling water is 105.1 °C. the metal block has a mass of 250.42 g. The metal object is removed from the boiling water and submerged in 130.00 mL of water at 23.7 °C. The equilibrium temperature was 36.9 °C. a) Assuming no heat was lost to the surrounding, determine the specific heat capacity of the metal. (6 points) b) Calculate the percent error if the...
A student designed his experiment based on Dumas method to determine the molecular 5 Pts mass of an unknown volatile liquid and tabulated the data obtained from his cxpcriment. From the given data calculate the Molar mass of the unknown liquid and percent error if the accepted molar mass is Y g/mol. Q8. Mass of flask, boiling stone, foil cap, & unknown liquid after cooling Mass of flask, boiling stone and foil cape Water bath temperature Barometric pressure Volume of...
please answer all questions
O The Hong Kong Polytechnic University Section A 1. (a) A digital thermometer is designed to measure temperature ranging from 20°C to 45°c. 0) Describe the two steps involved in the digitization of analog signals (4 marks) (i) If the quantization error is required to be less than O. I C, how many bits are required to encode the temperature readings? (4 marks) (ii)What is the temperature reading of 26.S°C in binary form after the digitization?...
cork thermometer plastic lid ← stirrer insulator ring reservoir ice and water aluminum container Figure 5.1: A Simple Calorimeter In the other direction, when the phase change is from liquid to solid, the sample must release the same amount of energy. For water at its normal freezing or melting temperature, Lf=79.5 cal/g = 333 kJ/kg (5.2) This lab employs a double-wall calorimeter as shown in Figure 5.1 to measure the heat of fusion for ice. The calorimeter consists of an...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
Student Course Home royinstruct 72/quizzes/285228/take uestion9 10 pts You add 0.500 kg of water to the blender and run the blender for 20.0 seconds. The water's initial temperature is 20.00P C its final temperature is 25.00P C. How much heat has been added to the water, in J? The total heat added to the water is J.(You should calculate this to 3 significant figures). D Question 10 10 pts You add 0.500 kg of water to the blender and run...
9,10,11,12,13,14, and 15 please
a syringe is filled with 40. mL. of air at room temperature (22°C) in the lab and then this syringe is placed into a boiling water bath. After S minutes, the volume of gas in in the syringe (still at lab pressure) should be close to which volume? 9. Which of these is a true statement about a below a tube that is filled with a liquid such as mercury b. The weight of the liquid...
This is a practice quiz and I want to make sure I have the
correct answers, please help! thank you!
In
the text I said it was a practice quiz
1. Liquid aluminum will crystalize with a face-centered cubic (fce) unit cell. Face-centered cubic unit cells contain 8 atoms per unit cell. Determine the density of solid aluminum if the radius of an aluminum atom is measured to be 143 pm. (Hint: Calculate the mass and volume to determine the...
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