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PRELAB Pre-Lab Questions: (To be submitted at the beginning of lab) . Summary of the procedure...
please help me.I answered them, but not sure about my answers Since you are measuring pressure...
please help me.I answered them, but not sure about my answers
Since you are measuring pressure in mmHg, which numerical value of R should you us (enter the numerical value only, no units and use three significant figures)? 0.082 Question 2 1 pts Suppose you have a stoppered flask containing CO2 gas at room temperature and pressure. If the volume of your stoppered flask is 300.0 mL, the pressure in the room is 770. mm Hg, and the temperature in...
i just wanna double check whether i answered correct or not please. Why do we measure...
i just wanna double check whether i answered correct or not
please.
Why do we measure the volume of the flask in this experiment with water rather than using the volume listed on the side? Select all correct answers that apply. Must include all correct answers for full credit. The volume is not accurate on a flask to the number of significant figures required for this experiment The volumetric markings on the flask do not extend to it's full height...
83 Name: Gas Laws Lab Prelab questions: Your instructor may ask you to answer these in...
83 Name: Gas Laws Lab Prelab questions: Your instructor may ask you to answer these in your lab notebook in a online or they may ask you to write your answers in your lab manual and submit them before starting your experiment. Follow your instructor's directions. "prelab" section, 1. What is an ideal gas? 2. Using Appendix B from your textbook complete the following table: (remember 760 mm Hg = 1 atm) Temperature (°C) 18 19 Pressure (mm Hg) Pressure...
83 Name: Gas Laws Lab Prelab questions: Your instructor may ask you to answer these in...
83 Name: Gas Laws Lab Prelab questions: Your instructor may ask you to answer these in your lab notebook in a online or they may ask you to write your answers in your lab manual and submit them before starting your experiment. Follow your instructor's directions. "prelab" section, 1. What is an ideal gas? 2. Using Appendix B from your textbook complete the following table: (remember 760 mm Hg = 1 atm) Temperature (°C) 18 19 Pressure (mm Hg) Pressure...
The steps just refer to the lab procedure and the ones present are where data is...
The steps just refer to the lab procedure and the ones present
are where data is actually recorded. The rest, like step 5, are
things like fill the flask with water and wipe away any excess. All
needed info for the calculations is there. I'm trying to
double-check my work.
DATA & CALCULATIONS: Measured quantities that were the same for all three runs: 138.5 mL Volume of flask Laboratory temperature Atmospheric pressure Density of air 29.82 inches Hg 1.189 g/L...
your Pre-Lab. 1. A 125 mL sample of dry air at 230.0°C is cooled to 100.0°C...
your Pre-Lab. 1. A 125 mL sample of dry air at 230.0°C is cooled to 100.0°C at constant pressure. What volume with the air occupy at 100.0°C? 2. A 250.0 mL container of gas is at 150.0°C. At what temperature will the gas occupy a volume of 125 mL? (assume constant pressure) 3. An open flask of air is cooled Does it contain more gas molecules before or after cooling? a. Is the pressure the same, greater or less than...
Name: Date: Instructor's Initials: Lab Section: The Ideal Gas Constant PreLab: sing the Balanced Equation (1),...
Name: Date: Instructor's Initials: Lab Section: The Ideal Gas Constant PreLab: sing the Balanced Equation (1), determine how many moles of hydrogen should be produced by 0.036 grams of Mg metal using an excess of HCI. If the average temperature of the water was 21.5 °C, what pressure inside the Graduated cylinder is contributed by the water vapor? (See Table 1). 3. If the atmospheric pressure in the lab was 754 mmHg on that day, what would be the pressure...
Lab partner: Molar Mass of Butane Prelab 1. Convert a pressure reading of 875 mm Hg...
Lab partner: Molar Mass of Butane Prelab 1. Convert a pressure reading of 875 mm Hg into atm. (1 atm = 760 mmHg) 2. Look up the chemical formula for butane and calculate its molar mass? 3. A pure gas sample has a volume of 109 mL, a pressure of 723 mm Hg, and a temperature of 23.5°C. Use the ideal gas law (Eq. 1) to calculate how many moles of gas are present in this sample? (Be sure you...
Titration of Acids and Bases Pre-lab Questions t in the laboratory, you should be Before beginning...
Titration of Acids and Bases Pre-lab Questions t in the laboratory, you should be Before beginning this exper following questions. 1. Defined und how you would go whout doing it 2. Define the 3. Define the term 4. Why do you determine a mass by difference? 5. What are equivalence points and end points? How do they differ? 6. Why should the standardized N.OH solution be kept in a stoppered bottle? 7. What is parallax? Why should you avoid it?...
Answer these questions before coming to the lab and turn in your answers at the beginning...
Answer these questions before coming to the lab and turn in your answers at the beginning of the lab to get credit. Turning this prelab question sheet at the end of the lab would result in not getting any credit for the prelab. 1. A cube's length was measured with a caliper to be 2.638 cm and the mass of the cube is 61.60 g. a) How many significant figures you get when you read with this caliper? b) Calculate...
please help me.I answered them, but not sure about my answers
Since you are measuring pressure in mmHg, which numerical value of R should you us (enter the numerical value only, no units and use three significant figures)? 0.082 Question 2 1 pts Suppose you have a stoppered flask containing CO2 gas at room temperature and pressure. If the volume of your stoppered flask is 300.0 mL, the pressure in the room is 770. mm Hg, and the temperature in...
i just wanna double check whether i answered correct or not
please.
Why do we measure the volume of the flask in this experiment with water rather than using the volume listed on the side? Select all correct answers that apply. Must include all correct answers for full credit. The volume is not accurate on a flask to the number of significant figures required for this experiment The volumetric markings on the flask do not extend to it's full height...
83 Name: Gas Laws Lab Prelab questions: Your instructor may ask you to answer these in your lab notebook in a online or they may ask you to write your answers in your lab manual and submit them before starting your experiment. Follow your instructor's directions. "prelab" section, 1. What is an ideal gas? 2. Using Appendix B from your textbook complete the following table: (remember 760 mm Hg = 1 atm) Temperature (°C) 18 19 Pressure (mm Hg) Pressure...
83 Name: Gas Laws Lab Prelab questions: Your instructor may ask you to answer these in your lab notebook in a online or they may ask you to write your answers in your lab manual and submit them before starting your experiment. Follow your instructor's directions. "prelab" section, 1. What is an ideal gas? 2. Using Appendix B from your textbook complete the following table: (remember 760 mm Hg = 1 atm) Temperature (°C) 18 19 Pressure (mm Hg) Pressure...
The steps just refer to the lab procedure and the ones present
are where data is actually recorded. The rest, like step 5, are
things like fill the flask with water and wipe away any excess. All
needed info for the calculations is there. I'm trying to
double-check my work.
DATA & CALCULATIONS: Measured quantities that were the same for all three runs: 138.5 mL Volume of flask Laboratory temperature Atmospheric pressure Density of air 29.82 inches Hg 1.189 g/L...
your Pre-Lab. 1. A 125 mL sample of dry air at 230.0°C is cooled to 100.0°C at constant pressure. What volume with the air occupy at 100.0°C? 2. A 250.0 mL container of gas is at 150.0°C. At what temperature will the gas occupy a volume of 125 mL? (assume constant pressure) 3. An open flask of air is cooled Does it contain more gas molecules before or after cooling? a. Is the pressure the same, greater or less than...
Name: Date: Instructor's Initials: Lab Section: The Ideal Gas Constant PreLab: sing the Balanced Equation (1), determine how many moles of hydrogen should be produced by 0.036 grams of Mg metal using an excess of HCI. If the average temperature of the water was 21.5 °C, what pressure inside the Graduated cylinder is contributed by the water vapor? (See Table 1). 3. If the atmospheric pressure in the lab was 754 mmHg on that day, what would be the pressure...
Lab partner: Molar Mass of Butane Prelab 1. Convert a pressure reading of 875 mm Hg into atm. (1 atm = 760 mmHg) 2. Look up the chemical formula for butane and calculate its molar mass? 3. A pure gas sample has a volume of 109 mL, a pressure of 723 mm Hg, and a temperature of 23.5°C. Use the ideal gas law (Eq. 1) to calculate how many moles of gas are present in this sample? (Be sure you...
Titration of Acids and Bases Pre-lab Questions t in the laboratory, you should be Before beginning this exper following questions. 1. Defined und how you would go whout doing it 2. Define the 3. Define the term 4. Why do you determine a mass by difference? 5. What are equivalence points and end points? How do they differ? 6. Why should the standardized N.OH solution be kept in a stoppered bottle? 7. What is parallax? Why should you avoid it?...
Answer these questions before coming to the lab and turn in your answers at the beginning of the lab to get credit. Turning this prelab question sheet at the end of the lab would result in not getting any credit for the prelab. 1. A cube's length was measured with a caliper to be 2.638 cm and the mass of the cube is 61.60 g. a) How many significant figures you get when you read with this caliper? b) Calculate...
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