Determine when to put on disposable gloves for work in the lab. Select one: Before entering...
- Before entering the laboratory room
- Before handling any glassware or chemicals for the expe
- After setting up all the glassware but before handling che
- After cleaning all the glassware for the experiment
Homework Answers
Second option is correct is because we need to were the Golves before handling any glassware or experiment not every time inside chemistry lab.
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Determine when to put on disposable gloves for work in the lab.
Select one:
Before entering...
What are the best practices for safely handling waste in the lab? Select one or more:...
What are the best practices for safely handling waste in the lab? Select one or more: Place any paper towels from the clean-up in the trash. Check labels or instructions before any disposal. Remove gloves for better manipulation of the waste containers. Always wear appropriate Personal Protective Equipment
. When should you perform hand hygiene? (Select all that apply.) a) Before applying gloves to...
. When should you perform hand hygiene? (Select all that apply.) a) Before applying gloves to insert an IV b) After documenting in the patient’s chart located at the nurse’s station c) After moving a patient up in bed d) Before assessing a patient’s vital signs e) Before touching clean linens
5.The employee default deductions – Select one: a. cannot be changed once you finish entering history...
5.The employee default deductions – Select one: a. cannot be changed once you finish entering history b. are entered into the employee ledger records c. are the same for all employees d. are defined by the Canada Revenue Agency tax laws 6.Which of the following is not involved in setting up employee entitlements – Select one: a. entering the number of days of entitlement accrued for the employee b. entering linked accounts for the entitlements c. naming the entitlements d....
I did an experiment where I synthesized 2-phenyl-2-propanol using the grignard reaction. please help me answer these lab questions Reagents Moles of Reagent 0.00142 moles (0.224 g)bromoben...
I did an experiment where I synthesized
2-phenyl-2-propanol using the grignard reaction. please help me
answer these lab questions
Reagents Moles of Reagent 0.00142 moles (0.224 g)bromobenzene 0.00712 mol (0.173 g) 2 mL of THF (n/a moles) tetrahydrofuran 0.00142 mol (0.083g, 0.11mL) acetone, HPLC grade, anh Reagent Name FW 157.75 24.31 n/a 58 Comments Mg powder grind before using must be anhydrous must be anhydrous Pre-Lab Assignment: 1. Determine the volume (mL) of bromobenzene needed for the experiment. Obtain the...
In a laboratory setting, one way to ensure accuracy is to use repeated measurements when conducting...
In a laboratory setting, one way to ensure accuracy is to use repeated measurements when conducting an experiment. Suppose that a lab assistant was given 10 experiments to conduct. After each experiment, she had to measure the weight of the result on two different scales, scale A and scale B. The mean difference of the weights of the 10 experimental results was 1.87 grams with a standard deviation of 1.33 grams (scale A – scale B). It is suspected that...
In an experiment in the lab, a white solid called ammonium chloride (NH4Cl) is heated and...
In an experiment in the lab, a white solid called ammonium chloride (NH4Cl) is heated and decomposes to form two gases, hydrogen chloride (one hydrogen and one chlorine) and ammonia (one nitrogen and three hydrogens). The reaction is conducted in a closed flask to capture the gases that are produced. Observations from the experiment are recorded below: . . OBSERVATIONS Mass of flask 132.6 g Mass of NH4Cl and flask 153.8 g . Observations of NH4CI: It is a crystalline...
Pre-Lab Questions: Thermochemistry MUST be completed before an experiment is started. Show all work and be...
Pre-Lab Questions: Thermochemistry MUST be completed before an experiment is started. Show all work and be sure to include units. Q What is the difference between heat capacity and specifie heat? What are the units for each? Q2. What is a calorimeter, and why is it used in thermochemistry? Why should you measure the specific h the calorimeter? Q3. What is the sign +or-) of the temperature change for a piece of hot metal when it is placed in cold...
How to Protect Your Back Hazard Chemicals Circle the information items that can be found on...
How to Protect Your Back Hazard Chemicals Circle the information items that can be found on a Material Safety Data Sheet (MSDS) for a chemic 11 you work: a. b. What happens when substances are mixed How to dispose of hazardous substances What first aid to give in an emergency All of the above C. d. Personal Protective Equipment 12. Circle the items that are personal protective equipment Gowns Face Shields Disposable single use gloves Prescription eye glasses а. b....
Chemistry 326 Laboratory Manual obowy zawabnya CH, HycoF OCH Pre-Lab Assignment: Complete BEFORE Lab! (5 pts)...
Chemistry 326 Laboratory Manual obowy zawabnya CH, HycoF OCH Pre-Lab Assignment: Complete BEFORE Lab! (5 pts) 1. Draw the ketones and aldehydes necessary to synthesize ALL compounds A-F via double Aldol condensation. 2. Determine the moles of acetone and the moles of benzaldehyde used in the sample procedure below. NOTE: you will need to find the density of acetone and benzaldehyde to do this exercise. 3. Using the same number of moles you calculated above, determine the VOLUME of each...
Lyn works in a PSG medical centre clinic as a Centre Manager. As couple of nurses...
Lyn works in a PSG medical centre clinic as a Centre Manager. As couple of nurses were away on vacation, Lyn hired a family friend, Cristina, to assist with Centre daily jobs. Cristina was a medical assistant and a DA many years ago, but left work after a leg injury. Lyn only wanted Cristina to help out with sterilising and cleaning up after procedures, so everyone agreed that it should be fine. Cristina started her work at the centre and...
I did an experiment where I synthesized
2-phenyl-2-propanol using the grignard reaction. please help me
answer these lab questions
Reagents Moles of Reagent 0.00142 moles (0.224 g)bromobenzene 0.00712 mol (0.173 g) 2 mL of THF (n/a moles) tetrahydrofuran 0.00142 mol (0.083g, 0.11mL) acetone, HPLC grade, anh Reagent Name FW 157.75 24.31 n/a 58 Comments Mg powder grind before using must be anhydrous must be anhydrous Pre-Lab Assignment: 1. Determine the volume (mL) of bromobenzene needed for the experiment. Obtain the...
In a laboratory setting, one way to ensure accuracy is to use repeated measurements when conducting an experiment. Suppose that a lab assistant was given 10 experiments to conduct. After each experiment, she had to measure the weight of the result on two different scales, scale A and scale B. The mean difference of the weights of the 10 experimental results was 1.87 grams with a standard deviation of 1.33 grams (scale A – scale B). It is suspected that...
In an experiment in the lab, a white solid called ammonium chloride (NH4Cl) is heated and decomposes to form two gases, hydrogen chloride (one hydrogen and one chlorine) and ammonia (one nitrogen and three hydrogens). The reaction is conducted in a closed flask to capture the gases that are produced. Observations from the experiment are recorded below: . . OBSERVATIONS Mass of flask 132.6 g Mass of NH4Cl and flask 153.8 g . Observations of NH4CI: It is a crystalline...
Pre-Lab Questions: Thermochemistry MUST be completed before an experiment is started. Show all work and be sure to include units. Q What is the difference between heat capacity and specifie heat? What are the units for each? Q2. What is a calorimeter, and why is it used in thermochemistry? Why should you measure the specific h the calorimeter? Q3. What is the sign +or-) of the temperature change for a piece of hot metal when it is placed in cold...
How to Protect Your Back Hazard Chemicals Circle the information items that can be found on a Material Safety Data Sheet (MSDS) for a chemic 11 you work: a. b. What happens when substances are mixed How to dispose of hazardous substances What first aid to give in an emergency All of the above C. d. Personal Protective Equipment 12. Circle the items that are personal protective equipment Gowns Face Shields Disposable single use gloves Prescription eye glasses а. b....
Chemistry 326 Laboratory Manual obowy zawabnya CH, HycoF OCH Pre-Lab Assignment: Complete BEFORE Lab! (5 pts) 1. Draw the ketones and aldehydes necessary to synthesize ALL compounds A-F via double Aldol condensation. 2. Determine the moles of acetone and the moles of benzaldehyde used in the sample procedure below. NOTE: you will need to find the density of acetone and benzaldehyde to do this exercise. 3. Using the same number of moles you calculated above, determine the VOLUME of each...
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