1. for each of the given situations, tell how the error will affect the calculated specific...
1. for each of the given situations, tell how the error will affect the calculated specific heat. Will it be too high, too low, or have no effect on the result? explain your answer.
a. the balance used to determine the mass of the metal was in error by 10g on the high side. In other words, the balance gave a larger mass than the true mass.
b. it was thought that the metal was in the boiling water long enough to reach 100.0*C, but it wasn't. In other words, the initial temperature was lower than it was thought to be.
c. The water used in the calorimeter was warm instead of room temperature
d. the calorimeter contained twice as much water than that specified in the procedure.
Homework Answers
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1. for each of the given situations, tell how the error will
affect the calculated specific...
help Error Analysis 1. In parts A, B, and C, if the calorimeter was not dry,...
help
Error Analysis 1. In parts A, B, and C, if the calorimeter was not dry, the change in temperature would be too (high/low). This would make the |AH| appear too _(high/low). 2. If a reaction is exothermic, the sign of AH is and heat is 3. If a reaction is endothermic, the sign of AH is and heat is 4. In the determination of the specific heat of the metal, if some of the water that was used to...
Calorimetry Materials: Styrofoam cup & lid Digital thermometer Metal sample Graduated cylinder Beaker Test tube with...
Calorimetry Materials: Styrofoam cup & lid Digital thermometer Metal sample Graduated cylinder Beaker Test tube with stopper Heating setup for beaker Behind a calorimetry experiment is the known occurrence of heat flow from a warm object to a cooler object. Heat scales with the amount of matter and also depends on the resistance of an object to change temperature. Temperature is just the average of the amount of energy contained inside a given area. Heat is represented by the letter...
EXPERIMENT 2 Each person in the lab group should read each measurement and record it in this tabl...
i
need help on questions 1-5
EXPERIMENT 2 Each person in the lab group should read each measurement and record it in this table to reduce errors t 1 Lab Partner 1 57.7 27.4 24.2 9 242 Partner 121. 100.59 Lab 23.9 1116 2 5 7 Lab Partner 3 57 Average Metal hot lost final T. gained Cup+ Stirrer Ti cold Water % Error QUESTIONS What would be the effect on your calculation of co if there was heat lost...
please find all the missing blanks. Data and Calculations: Heat Effects and Calorimetry A. Specific Heat Trial 1 Ma...
please find all the missing blanks.
Data and Calculations: Heat Effects and Calorimetry A. Specific Heat Trial 1 Mass of stoppered test tube plus metal Mass of test tube and stopper 34.564 25.7348 9.150 Trial 2 34.5648 25.7346 एयर 9. ISO 49.6928 Mass of calorimeter Mass of calorimeter and water 48.940 Mass of water Mass of metal 23.6 23.6 Initial temperature of water in calorimeter °C c Initial temperature of metal (assume 100°C unless directed to do otherwise) 101.8 °C...
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...
Is the calculated concentration for IO3- in the data table correct, and if not, how do I calculat...
Is the calculated concentration for IO3-
in the data table correct, and if not, how do I calculate it. Also,
the questions below the data table in the second picture. How are
they calculated?
2. The molar solubility of Cal(IO3)2 in pure water Temperature of the saturated solution of calcium iodate: Volume (or mass) of saturated calcium iodate solution titrated:O -24 °C ted:1 Q mL (or g) Data Trial 1 Trial 2 Trial 3 Volume of Na2S203 titrant Final buret...
Indicate the one major type of limitation that is possible in each of the situations described...
Indicate the one major type of limitation that is possible in each of the situations described below. Choose from the following: selection bias, information bias, confounding, random error, limited generalizability or no error. Choose only one per example. A case-control study was conducted to determine whether lower socioeconomic status was associated with a higher risk of cervical cancer. The cases consisted of 250 women with cervical cancer who had been referred to Massachusetts General Hospital for treatment for cervical cancer. They were referred from...
Principles of Inorganic Chemistry! Week 5 Effect of Temperature on Solubility of a Salt In this experiment, you w...
Principles of Inorganic Chemistry! Week 5 Effect of Temperature on Solubility of a Salt In this experiment, you will study the effect of changing temperature on the amount of solute that will dissolve in a given amount of water. Water solubility is an important physical property in chemistry, and is often expressed as the mass of solute that dissolves in 100 g of water at a certain temperature. In this experiment, you will completely dissolve different quantities of potassium nitrate,...
just making sure did I do right in number 10. and im confused at number 11...
just making sure did I do right in number 10. and im confused at
number 11 and 12 13. becausse we didnt learn in class. please help.
thanks for your patient
PROCEDURE 1. This experiment is to be conducted individually. on the side shelf: small squares of copper, NaOH, HSO in the hood: conc. HNOs, conc. HC 2. The following items will be found 4 Use your brush and some soap solution to wash your casserole dish as well as...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
help
Error Analysis 1. In parts A, B, and C, if the calorimeter was not dry, the change in temperature would be too (high/low). This would make the |AH| appear too _(high/low). 2. If a reaction is exothermic, the sign of AH is and heat is 3. If a reaction is endothermic, the sign of AH is and heat is 4. In the determination of the specific heat of the metal, if some of the water that was used to...
Calorimetry Materials: Styrofoam cup & lid Digital thermometer Metal sample Graduated cylinder Beaker Test tube with stopper Heating setup for beaker Behind a calorimetry experiment is the known occurrence of heat flow from a warm object to a cooler object. Heat scales with the amount of matter and also depends on the resistance of an object to change temperature. Temperature is just the average of the amount of energy contained inside a given area. Heat is represented by the letter...
i
need help on questions 1-5
EXPERIMENT 2 Each person in the lab group should read each measurement and record it in this table to reduce errors t 1 Lab Partner 1 57.7 27.4 24.2 9 242 Partner 121. 100.59 Lab 23.9 1116 2 5 7 Lab Partner 3 57 Average Metal hot lost final T. gained Cup+ Stirrer Ti cold Water % Error QUESTIONS What would be the effect on your calculation of co if there was heat lost...
please find all the missing blanks.
Data and Calculations: Heat Effects and Calorimetry A. Specific Heat Trial 1 Mass of stoppered test tube plus metal Mass of test tube and stopper 34.564 25.7348 9.150 Trial 2 34.5648 25.7346 एयर 9. ISO 49.6928 Mass of calorimeter Mass of calorimeter and water 48.940 Mass of water Mass of metal 23.6 23.6 Initial temperature of water in calorimeter °C c Initial temperature of metal (assume 100°C unless directed to do otherwise) 101.8 °C...
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...
Is the calculated concentration for IO3-
in the data table correct, and if not, how do I calculate it. Also,
the questions below the data table in the second picture. How are
they calculated?
2. The molar solubility of Cal(IO3)2 in pure water Temperature of the saturated solution of calcium iodate: Volume (or mass) of saturated calcium iodate solution titrated:O -24 °C ted:1 Q mL (or g) Data Trial 1 Trial 2 Trial 3 Volume of Na2S203 titrant Final buret...
Principles of Inorganic Chemistry! Week 5 Effect of Temperature on Solubility of a Salt In this experiment, you will study the effect of changing temperature on the amount of solute that will dissolve in a given amount of water. Water solubility is an important physical property in chemistry, and is often expressed as the mass of solute that dissolves in 100 g of water at a certain temperature. In this experiment, you will completely dissolve different quantities of potassium nitrate,...
just making sure did I do right in number 10. and im confused at
number 11 and 12 13. becausse we didnt learn in class. please help.
thanks for your patient
PROCEDURE 1. This experiment is to be conducted individually. on the side shelf: small squares of copper, NaOH, HSO in the hood: conc. HNOs, conc. HC 2. The following items will be found 4 Use your brush and some soap solution to wash your casserole dish as well as...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
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