Homework Answers
1) NO2 is a toxic gas, reddish brown in colour, having a number of harmful effects. It has a pungent smell, both short term and long term exposure can have ill effects. Higher levels of breathing in NO2 may increase respiratory problems, while inflaming lining of lungs and airways, and can reduce immunity to lung infection. It can cause wheezing, coughing and bronchitis, collapse and even death. Higher level exposure can cause reduction in ability of blood to carry O2 resulting into headache, dizziness, fatigue and methamoglobinemia (i.e. bluish coloration of skin and lips). It may also cause mutations of genes. NO2 is acidic in nature. It can lead to formation of fine particles and ground level ozone both of which are harmful to human health. It is heavier than air and can cause asphyixiation. Direct exposure to it can cause irritation of eyes and skin and damage to eyes.
2) GHS symbols used to identify the hazards of NO2 are GHS03, GHS04, GHS05 and GHS06.
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3) In the experiment, the sash to the hood is closed during the oxidation for safety...
13 Question (3 points) The images represent three samples of nitrogen dioxide, which is the pollutant responsible for t...
13 Question (3 points) The images represent three samples of nitrogen dioxide, which is the pollutant responsible for the brown color of the atmospheric pollution. At high temperatures, nitrogen dioxide decomposes to nitrogen monoxide and oxygen gas. Use the particulate model below to answer the following questions. See Hint (0.3 point) Part 3 A plot of No versus time is linear. Using this information, identify the factor by which the rate will increase in model (c) if the number NO2...
Before doing an experiment with sulfur dioxide, you look up some safety mation. Answer the question...
Before doing an experiment with sulfur dioxide, you look up some safety mation. Answer the question below, and state what information you used to answer the solution. Is sulfur dioxide a solid, liquid or gas at room temp? How do you know? Is sulfur dioxide a fire hazard? How fo you know? Is sulfur dioxide a health hazard? How do you know? Is there a risk sulfur dioxide reacting with something else? How do you know? Based upon the information...
Question 2 and possibly 3 please. Pre-lab Questions: 1. Refer to the Safety Data Sheets to...
Question 2 and possibly 3
please.
Pre-lab Questions: 1. Refer to the Safety Data Sheets to find the molecular weights and hazards of all chemicals used in today's experiment, including the product, and record this information on your synthesis sheet. *Note Safety Data Sheets can be found on myDCC under “Safety Data Sheet E-Library”. 2. Refer to the above equation for the preparation of 2-methyl-2-butene, calculate the following: a. number of moles of 2-methyl-2-butanol in 5 grams b. number of...
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...
Oxidation of Cyclohexanol to Adipic Acid (continued on the next page): (1) (2 pts) In this...
Oxidation of Cyclohexanol to Adipic Acid (continued on the next page): (1) (2 pts) In this experiment we could have used cylcohexene instead of cyclohexanol and we would have still gotten adipic acid. Draw an alkene and an alcohol each of which would react with nitric acid to give suberic acid. (4 pts) In the oxidation that you carried out in this experiment, nitric acid ends up as a mixture of oxides of nitrogen. Use the formula index of the...
5. (10 pts) Before doing an experiment with sulfur dioxide, you look up some sarety swer...
5. (10 pts) Before doing an experiment with sulfur dioxide, you look up some sarety swer the information. Answer the questions below, and state what information you look up some safety question. used to answer the Is sulfur dioxide a solid, liquid or gas at room temp? How do you a. b. Is sulfur dioxide a fire hazard? How do you know? c. Is sulfur dioxide a health hazard? How do you know? d. Is there a risk of sulfur...
3. Nitrogen gas was collected in a eudiometer during a chemistry experiment by displacement of water....
3. Nitrogen gas was collected in a eudiometer during a chemistry experiment by displacement of water. When the levels of water inside and outside the eudiometer were adjusted to be the same, the volume of the collected gas was found to be 85.2 mL. The water temperature was 24°C and the barometric (atmospheric) pressure was found to be 764.0 mm Hg. What would be the volume of dry nitrogen gas at STP?
20. If your clothing catches on fire, you should A: run to the nearest safety-shower B:...
20. If your clothing catches on fire, you should A: run to the nearest safety-shower B: ask your friend to use a fire extinguisher on you C: drop down and roll on the floor D: ask your friend to use a fire hose on you 21. A student identified a compound to be toxic and determined that contact is possible during an experiment involving that chemical. The student wore appropriate gloves and the required PPE. What did the student overlook...
For questions 8 and 9, use the following reaction scheme which is part of the B-oxidation...
For questions 8 and 9, use the following reaction scheme which is part of the B-oxidation of a fatty acid. FAD FADH Compound 2 CoA Reaction A Compound 1 HO Reaction B OH NADH H NAD CoA Compound 4 Reaction C Compound 3 (9 pts) For each reaction A, B and C, shown above, correctly name the type of transformation that occurs during each of the 3 reactions, ie.: name the reaction that is occurring going from compound 1 to...
In this experiment you will use an oxidation - reduction titration to determine the percent of...
In this experiment you will use an oxidation - reduction titration to determine the percent of oxalate ion, CO2 in an unknown sample containing oxalate ion. Potassium permanganate (KMnO.) will be titrated against the oxalic acid (C2H:08) as shown by the following oxidation-reduction reaction: +3 +7 5C,044 2MnO4 + 16H* → 10CO, 8H0 + 2Mn2 +4 + + Mno. Mn? is the reduction process C2042 → CO2 is the oxidation process The underlying principle behind a titration is that an...
13 Question (3 points) The images represent three samples of nitrogen dioxide, which is the pollutant responsible for the brown color of the atmospheric pollution. At high temperatures, nitrogen dioxide decomposes to nitrogen monoxide and oxygen gas. Use the particulate model below to answer the following questions. See Hint (0.3 point) Part 3 A plot of No versus time is linear. Using this information, identify the factor by which the rate will increase in model (c) if the number NO2...
Before doing an experiment with sulfur dioxide, you look up some safety mation. Answer the question below, and state what information you used to answer the solution. Is sulfur dioxide a solid, liquid or gas at room temp? How do you know? Is sulfur dioxide a fire hazard? How fo you know? Is sulfur dioxide a health hazard? How do you know? Is there a risk sulfur dioxide reacting with something else? How do you know? Based upon the information...
Question 2 and possibly 3
please.
Pre-lab Questions: 1. Refer to the Safety Data Sheets to find the molecular weights and hazards of all chemicals used in today's experiment, including the product, and record this information on your synthesis sheet. *Note Safety Data Sheets can be found on myDCC under “Safety Data Sheet E-Library”. 2. Refer to the above equation for the preparation of 2-methyl-2-butene, calculate the following: a. number of moles of 2-methyl-2-butanol in 5 grams b. number of...
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...
Oxidation of Cyclohexanol to Adipic Acid (continued on the next page): (1) (2 pts) In this experiment we could have used cylcohexene instead of cyclohexanol and we would have still gotten adipic acid. Draw an alkene and an alcohol each of which would react with nitric acid to give suberic acid. (4 pts) In the oxidation that you carried out in this experiment, nitric acid ends up as a mixture of oxides of nitrogen. Use the formula index of the...
5. (10 pts) Before doing an experiment with sulfur dioxide, you look up some sarety swer the information. Answer the questions below, and state what information you look up some safety question. used to answer the Is sulfur dioxide a solid, liquid or gas at room temp? How do you a. b. Is sulfur dioxide a fire hazard? How do you know? c. Is sulfur dioxide a health hazard? How do you know? d. Is there a risk of sulfur...
3. Nitrogen gas was collected in a eudiometer during a chemistry experiment by displacement of water. When the levels of water inside and outside the eudiometer were adjusted to be the same, the volume of the collected gas was found to be 85.2 mL. The water temperature was 24°C and the barometric (atmospheric) pressure was found to be 764.0 mm Hg. What would be the volume of dry nitrogen gas at STP?
20. If your clothing catches on fire, you should A: run to the nearest safety-shower B: ask your friend to use a fire extinguisher on you C: drop down and roll on the floor D: ask your friend to use a fire hose on you 21. A student identified a compound to be toxic and determined that contact is possible during an experiment involving that chemical. The student wore appropriate gloves and the required PPE. What did the student overlook...
For questions 8 and 9, use the following reaction scheme which is part of the B-oxidation of a fatty acid. FAD FADH Compound 2 CoA Reaction A Compound 1 HO Reaction B OH NADH H NAD CoA Compound 4 Reaction C Compound 3 (9 pts) For each reaction A, B and C, shown above, correctly name the type of transformation that occurs during each of the 3 reactions, ie.: name the reaction that is occurring going from compound 1 to...
In this experiment you will use an oxidation - reduction titration to determine the percent of oxalate ion, CO2 in an unknown sample containing oxalate ion. Potassium permanganate (KMnO.) will be titrated against the oxalic acid (C2H:08) as shown by the following oxidation-reduction reaction: +3 +7 5C,044 2MnO4 + 16H* → 10CO, 8H0 + 2Mn2 +4 + + Mno. Mn? is the reduction process C2042 → CO2 is the oxidation process The underlying principle behind a titration is that an...
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