Homework Answers
Dry beans - C. Control
Soaked beans - B. Experimental sample
Respirometer - A: A tool to measure consumption of gas
Water bath - D. Keeps samples at a constant temperature
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Match the following experiment components to their role in the experiment. A. A tool to measure...
Table 1. Calculate the metabolic rates Respirometer Contents Oxygen consumption (ml O2/20 min) Oxygen consumption (ml...
Table 1. Calculate the metabolic rates Respirometer Contents Oxygen consumption (ml O2/20 min) Oxygen consumption (ml Oz/hr) A Germinating beans B Dry beans 1. What is the independent variable for the cellular respiration experiment? 2. What is the dependent variable for the cellular respiration experiment? 3. Explain why water moved into the respirometer 4. If you increase the temperature of the water bath that the respirometers were in, what would you predict would happen to the rate of cellular respiration...
Based on the data of Respirstion of Peas at Room Temperature and Colder Temperature answer the...
Based on the data of Respirstion of Peas at Room Temperature and
Colder Temperature answer the following questions:
1. Write two hypothesis that this experiment is designed to
test
2. Using the general gas law (V= nRT/p) give the variables
that had to be controlled for your data to be valid. State the
controls used for each variable and any means used to correct for
the influence of a variable.
3. Why does respirometer 3 serve as a negative control?...
2. In Part A of the experiment, what amount of "unknown metal" should be used? How...
2. In Part A of the experiment, what amount of "unknown metal" should be used? How is the precise mass of the "unknown metal determined? 3. In Part A of the experiment, why must the "unknown metal" initially be completely dry? How is it kept dry during heating? Determine the specific heat of an unknown metal following a procedure similar to Part A, using the data given: A 35.3g sample of metal was heated in a water bath to 99.5°C....
In gas absorption column experiment, the purpose of the experiment is to measure the absorption of...
In gas absorption column experiment, the purpose of the experiment is to measure the absorption of carbon dioxide into water flowing down the tower, using the gas analysis equipment provided. The experiment procedure is as follows. 1. First fill the two globes of the absorption analysis equipment on the left of the panel with 1.0 Molar caustic soda. Adjust the level in the globes to the '0' mark on the sight tube, using drain valve Cv into a flask to...
PRE-LAB QUESTIONS 1. A student did the experiment described except she used Al foil instead of...
PRE-LAB QUESTIONS 1. A student did the experiment described except she used Al foil instead of Mg. Her data table included the following values. Mass of Al 0.0352 g Temperature 19.08 °C Barometric pressure 762.5 mm Hg Volume of H, gas 46.92 mL Answer the following questions based on this data table. a, Write the balanced equation for the reaction between Aluminum and hydrochloric acid. a Al tHCI AIC t3 b. How many moles of Al were consumed? A1-36.989/mot Hnsamed...
DETERMINATION OF THE MASS OF MAGNESIUM METAL IN A SAMPLE EXPERIMENT 12 PRE-LAB QUESTIONS Fully answer these questio...
DETERMINATION OF THE MASS OF MAGNESIUM METAL IN A SAMPLE EXPERIMENT 12 PRE-LAB QUESTIONS Fully answer these questions in your laboratory notebook before coming to lab. Show all work for numerical calculations. 1. How many moles of hydrogen are present in a 43.50 mL sample at 25.5 °C and 772.8 torr? (assume the hydrogen is dry) 2. What is the mass of a piece of magnesium wire which produces 38.25 mL of hydrogen gas collected over water at 22.0 °C...
BE4-2 Match each of the following components of internal control with its description. Components of Internal...
BE4-2 Match each of the following components of internal control with its description. Components of Internal Control a. Procedures for maintaining ser b. Routine activities that are meai 1. Control environment 2. Risk assessment 3. Control activities 4. Information and communication 5. Monitoring c. Transfer of data from lower ma d. Formal policies to evaluate inte e. Overall attitude of the company
Name Lab Partner Lab Section PRELABORATORY EXERCISE Date 1 Complete each sentence below. a According to...
Name Lab Partner Lab Section PRELABORATORY EXERCISE Date 1 Complete each sentence below. a According to Charles' Law, the volume and temperature of a foued amount of gas are proportional at constant pressure. b When applying Charles' Law, the gas temperature must be expressed in c Unlike solids and liquids, the Cu b etween gas particles are essentially nonexistent 2 Read the procedure for this experiment carefully and provide the following information. a Name the gas or gas mixture that...
LAB D - CATALYTIC HYDROLYSIS OF SALICIN DRY DRY LAB WORKSHEETS WORKSHEETS-DO NOT HAND IN Enzyme-C...
Need answers for the questions that follow, in keeping with the
data provided.
LAB D - CATALYTIC HYDROLYSIS OF SALICIN DRY DRY LAB WORKSHEETS WORKSHEETS-DO NOT HAND IN Enzyme-Catalyzed Reaction: Rate law based on Figure 8: Experimental rate law: (based on experimental design) Blank Correction: 0:0GO Absorbance Readings Temperature of Water Bath #1 : 26-24 Temperature of Water Bath #2 5S 5d, Vial Time Absorbance (At) R: O 662 C: 0 002 R: 0 19 Absorbance (At) R: O 06S...
Experiment 5 Prelaboratory Assignment Percent Water in a Hydrated Salt chloride, a deliquescent salt, is used...
Experiment 5 Prelaboratory Assignment Percent Water in a Hydrated Salt chloride, a deliquescent salt, is used as a desiccant in laboratory desiccators to maintain a dry environment Date ab SecName Desk No. Explain. 1sb 2. Experimental Procedure, Part A.1. What is the purpose of firing the crucible? 3. A 1.803-g sample of gypsum, a hydrated salt of calcium sulfate, Caso., is heated at a temperature greater than 120 C in a crucible until a constant mass is reached. The mass...
Table 1. Calculate the metabolic rates Respirometer Contents Oxygen consumption (ml O2/20 min) Oxygen consumption (ml Oz/hr) A Germinating beans B Dry beans 1. What is the independent variable for the cellular respiration experiment? 2. What is the dependent variable for the cellular respiration experiment? 3. Explain why water moved into the respirometer 4. If you increase the temperature of the water bath that the respirometers were in, what would you predict would happen to the rate of cellular respiration...
Based on the data of Respirstion of Peas at Room Temperature and
Colder Temperature answer the following questions:
1. Write two hypothesis that this experiment is designed to
test
2. Using the general gas law (V= nRT/p) give the variables
that had to be controlled for your data to be valid. State the
controls used for each variable and any means used to correct for
the influence of a variable.
3. Why does respirometer 3 serve as a negative control?...
2. In Part A of the experiment, what amount of "unknown metal" should be used? How is the precise mass of the "unknown metal determined? 3. In Part A of the experiment, why must the "unknown metal" initially be completely dry? How is it kept dry during heating? Determine the specific heat of an unknown metal following a procedure similar to Part A, using the data given: A 35.3g sample of metal was heated in a water bath to 99.5°C....
PRE-LAB QUESTIONS 1. A student did the experiment described except she used Al foil instead of Mg. Her data table included the following values. Mass of Al 0.0352 g Temperature 19.08 °C Barometric pressure 762.5 mm Hg Volume of H, gas 46.92 mL Answer the following questions based on this data table. a, Write the balanced equation for the reaction between Aluminum and hydrochloric acid. a Al tHCI AIC t3 b. How many moles of Al were consumed? A1-36.989/mot Hnsamed...
DETERMINATION OF THE MASS OF MAGNESIUM METAL IN A SAMPLE EXPERIMENT 12 PRE-LAB QUESTIONS Fully answer these questions in your laboratory notebook before coming to lab. Show all work for numerical calculations. 1. How many moles of hydrogen are present in a 43.50 mL sample at 25.5 °C and 772.8 torr? (assume the hydrogen is dry) 2. What is the mass of a piece of magnesium wire which produces 38.25 mL of hydrogen gas collected over water at 22.0 °C...
BE4-2 Match each of the following components of internal control with its description. Components of Internal Control a. Procedures for maintaining ser b. Routine activities that are meai 1. Control environment 2. Risk assessment 3. Control activities 4. Information and communication 5. Monitoring c. Transfer of data from lower ma d. Formal policies to evaluate inte e. Overall attitude of the company
Name Lab Partner Lab Section PRELABORATORY EXERCISE Date 1 Complete each sentence below. a According to Charles' Law, the volume and temperature of a foued amount of gas are proportional at constant pressure. b When applying Charles' Law, the gas temperature must be expressed in c Unlike solids and liquids, the Cu b etween gas particles are essentially nonexistent 2 Read the procedure for this experiment carefully and provide the following information. a Name the gas or gas mixture that...
Need answers for the questions that follow, in keeping with the
data provided.
LAB D - CATALYTIC HYDROLYSIS OF SALICIN DRY DRY LAB WORKSHEETS WORKSHEETS-DO NOT HAND IN Enzyme-Catalyzed Reaction: Rate law based on Figure 8: Experimental rate law: (based on experimental design) Blank Correction: 0:0GO Absorbance Readings Temperature of Water Bath #1 : 26-24 Temperature of Water Bath #2 5S 5d, Vial Time Absorbance (At) R: O 662 C: 0 002 R: 0 19 Absorbance (At) R: O 06S...
Experiment 5 Prelaboratory Assignment Percent Water in a Hydrated Salt chloride, a deliquescent salt, is used as a desiccant in laboratory desiccators to maintain a dry environment Date ab SecName Desk No. Explain. 1sb 2. Experimental Procedure, Part A.1. What is the purpose of firing the crucible? 3. A 1.803-g sample of gypsum, a hydrated salt of calcium sulfate, Caso., is heated at a temperature greater than 120 C in a crucible until a constant mass is reached. The mass...
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