Homework Answers
The pipette P20 reads from 0 to 20 ul. So 0 1 5 reading means 1.5 microlitre. The other read is 1 5 0. This means 15 microlitre.
In P200 micropippte, it reads from 20 - 200 microlitres. So 0 1 5 means 15 microlitre. 1 5 0 means 150 micrlitre.
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3) Using your lab manual guidelines on page 3, If you set your P20 micropipettor to...
Weight Using SDS-PAGE Quantification of Total Protein Using Bradford Protein Assay Pre- Lab Your pre-lab assignment...
Weight Using SDS-PAGE Quantification of Total Protein Using Bradford Protein Assay Pre- Lab Your pre-lab assignment is to plan how you will prepare your BSA standard solutions for the calibration curve. A 2 mg/mL BSA stock solution will be available. You can simply dilute with deionized water. You will need to make 25 microliters of each of the following concentrations. For the first concentration, you will need to make 160 microliters so that the BSA volume is large enough that...
imagine that you perform this experiment as described in your lab manual in doing so your...
imagine that you perform this experiment as described in your lab manual in doing so your first temperature reading was 33°C and your second reading was 71°C your first volume was 34 mL what would be your calculated second volume?
CHE115 Name: Tear this page out of your laboratory manual and submit it to your TA with your answers B. Post-Lab As...
CHE115 Name: Tear this page out of your laboratory manual and submit it to your TA with your answers B. Post-Lab Assessment Questions: (25 pts) The post-lab assessment questions for each laboratory experiment are questions that you must complete at home and hand in to your laboratory instructor the following week These questions are designed to stimulate thought and may not always be simple to answer. You should always answer them as thoroughly as you are able to 1. (5...
You have set up the apparatus for this experiment, as described in the lab manual, and...
You have set up the apparatus for this experiment, as described in the lab manual, and collected the following data: Atmospheric pressure 728.Otorr Temperature 25.8°C Gas constant 0.08206 L'atm/mol K You then ran the experiment using 0.3234 g of alka-seltzer and generated a volume of CO2 of 40.16 mL. How many moles of CO2 were produced? (Note: Don't forget to subtract the water vapor pressure from the total atmospheric pressure) 5.5X10^-4 mol of carbon dioxide 1.55X10^-3 mol of carbon dioxide...
Help with calculating enthalpy of the reactions and number 2 CHEM 1211L Lab Manual-Page 117 DATA...
Help with calculating enthalpy of the reactions and number 2
CHEM 1211L Lab Manual-Page 117 DATA AND CALCULATIONS (Show all data in an easy to follow format, like a table. Attach copies of your graphs) Dilution Calculations 6-ом 6-0-1 Data Reach mass o-120 (1) Write Reaction A between magnesium and hydrochloric acid: (2) Write Reaction B between solid magnesium oxide and hydrochloric acid (3) Write Reaction C for the formation of liquid water AH3 286 kJ/mol CHEM 1211L Lab Manual...
please help with no 3,4,5 and 6 Thanks 1. What is standard error? Measure of statistical...
please help with no 3,4,5 and 6
Thanks
1. What is standard error? Measure of statistical accuracy of an estimate, equal to the standard deviation of the theorental distribution of a large populanon of such estimates 2. What calculation is used to describe the variation in measurements. 3. In experiment 3.2. You will be measuring out 40ml of volume. How many times will you measure 40 ml? 4. What is the difference for each time you measure out 40ml? In...
Chem 1211 Air Bag Prelab Chem 1211 Pre-Lab Air Bag CHEM 1211L Lab Manual - Page 122 Air Bag Page 1 Pre-Lab Quest...
Chem 1211 Air Bag Prelab
Chem 1211 Pre-Lab Air Bag
CHEM 1211L Lab Manual - Page 122 Air Bag Page 1 Pre-Lab Questions Name: Write the mathematical expression for the ideal Gas Law. Identify each symbol and constant used. Calculate the volume of 20.0 g of oxygen at 25°C and one atmosphere of pressure qur NaNo(s); CHEM 1211L Lab Manual - Page 123 3. a. Consider the reaction of potassium with water. Write the balanced chemical equation for this reaction...
QUESTION 4 Go to page 8 of your lab manual. (everything to 3 decimal places) Fill...
QUESTION 4 Go to page 8 of your lab manual. (everything to 3 decimal places) Fill in the absolute error and the percent error for Table 1,3 Line 1: Absolute error is and % error is Line 2: Absolute error is and % error is Line 3: Absolute error is and the % error is The density of a substance, to the nearest 0.01 g/mL, if the mass is 24.893 g and the volume is 4.8 mL is places) g/mL...
help answer questions 1 and 2 CHEM 1211L La Man -Page CHEM 1211L Lab Manual -...
help answer questions 1 and 2
CHEM 1211L La Man -Page CHEM 1211L Lab Manual - Page 6 Post-Lab Questions 1. List experimental factors that might lead to a high % difference between titrations 2. In a titration of a standardized NaOH solution with an unknown acid solution, what assumption would have to be made in order to calculate the concentration of the acid solution? (Write this in the form of a testable hypothesis) 3 How does the molarity of...
Imagine that you performed this experiment as described in yourlab manual. In doing so, your...
Imagine that you performed this experiment as described in your lab manual. In doing so, your first temperature reading was 32℃ , and your second reading was 54℃. Your first volume was 21 mL . what would be your calculated 2nd volume?
Weight Using SDS-PAGE Quantification of Total Protein Using Bradford Protein Assay Pre- Lab Your pre-lab assignment is to plan how you will prepare your BSA standard solutions for the calibration curve. A 2 mg/mL BSA stock solution will be available. You can simply dilute with deionized water. You will need to make 25 microliters of each of the following concentrations. For the first concentration, you will need to make 160 microliters so that the BSA volume is large enough that...
CHE115 Name: Tear this page out of your laboratory manual and submit it to your TA with your answers B. Post-Lab Assessment Questions: (25 pts) The post-lab assessment questions for each laboratory experiment are questions that you must complete at home and hand in to your laboratory instructor the following week These questions are designed to stimulate thought and may not always be simple to answer. You should always answer them as thoroughly as you are able to 1. (5...
You have set up the apparatus for this experiment, as described in the lab manual, and collected the following data: Atmospheric pressure 728.Otorr Temperature 25.8°C Gas constant 0.08206 L'atm/mol K You then ran the experiment using 0.3234 g of alka-seltzer and generated a volume of CO2 of 40.16 mL. How many moles of CO2 were produced? (Note: Don't forget to subtract the water vapor pressure from the total atmospheric pressure) 5.5X10^-4 mol of carbon dioxide 1.55X10^-3 mol of carbon dioxide...
Help with calculating enthalpy of the reactions and number 2
CHEM 1211L Lab Manual-Page 117 DATA AND CALCULATIONS (Show all data in an easy to follow format, like a table. Attach copies of your graphs) Dilution Calculations 6-ом 6-0-1 Data Reach mass o-120 (1) Write Reaction A between magnesium and hydrochloric acid: (2) Write Reaction B between solid magnesium oxide and hydrochloric acid (3) Write Reaction C for the formation of liquid water AH3 286 kJ/mol CHEM 1211L Lab Manual...
please help with no 3,4,5 and 6
Thanks
1. What is standard error? Measure of statistical accuracy of an estimate, equal to the standard deviation of the theorental distribution of a large populanon of such estimates 2. What calculation is used to describe the variation in measurements. 3. In experiment 3.2. You will be measuring out 40ml of volume. How many times will you measure 40 ml? 4. What is the difference for each time you measure out 40ml? In...
Chem 1211 Air Bag Prelab
Chem 1211 Pre-Lab Air Bag
CHEM 1211L Lab Manual - Page 122 Air Bag Page 1 Pre-Lab Questions Name: Write the mathematical expression for the ideal Gas Law. Identify each symbol and constant used. Calculate the volume of 20.0 g of oxygen at 25°C and one atmosphere of pressure qur NaNo(s); CHEM 1211L Lab Manual - Page 123 3. a. Consider the reaction of potassium with water. Write the balanced chemical equation for this reaction...
QUESTION 4 Go to page 8 of your lab manual. (everything to 3 decimal places) Fill in the absolute error and the percent error for Table 1,3 Line 1: Absolute error is and % error is Line 2: Absolute error is and % error is Line 3: Absolute error is and the % error is The density of a substance, to the nearest 0.01 g/mL, if the mass is 24.893 g and the volume is 4.8 mL is places) g/mL...
help answer questions 1 and 2
CHEM 1211L La Man -Page CHEM 1211L Lab Manual - Page 6 Post-Lab Questions 1. List experimental factors that might lead to a high % difference between titrations 2. In a titration of a standardized NaOH solution with an unknown acid solution, what assumption would have to be made in order to calculate the concentration of the acid solution? (Write this in the form of a testable hypothesis) 3 How does the molarity of...
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