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Chemistr 1000-L Laboratory-PART 1 (Note, most of the questions are directly out of The difference is...
Name Section/CRN POST LABORATORY QUESTIONS 1. A student weighs out 3.52 g. of salicylic acid in...
Name Section/CRN POST LABORATORY QUESTIONS 1. A student weighs out 3.52 g. of salicylic acid in a 100 ml flask and adds 2.3 mL of acetic anhydride (density 1.080 g/mL). Determine the maximum (theoretical) number of grams of acetylsalicylic acid she can prepare. 2. If the student obtained 4.21 g, of aspirin, calculate the % yield. Briefly, explain why she might have obtained this amount of product. 3. The solubility of Aspirin (acetylsalicylic acid) at 25 °C is 3.0 mg/mL...
Post-Lab Questions Write your answers in pen and include tontits 1. Draw a structure for water, showing that it...
Post-Lab Questions Write your answers in pen and include tontits 1. Draw a structure for water, showing that it is a polar solvent. 2. Draw a structure for CCL, carbon tetrachloride. Is this a polar or non-polar solvent? 3. Generally, what effect does increasing temperature have on the solubility of a substance? 4. Why are "spectator ions" not included in the net ionic reaction? 5. What did you observe in this experiment that tells us whether wax is polar or...
at 15.0°C 20.0°C, 22.0°C, 25.0°C, Post-Laboratory Questions 1. Write down the values for the density of...
at 15.0°C 20.0°C, 22.0°C, 25.0°C, Post-Laboratory Questions 1. Write down the values for the density of water at 15.0°C, 20. and 28.0°C. a. Compare the values of the density of water at the above temp temperature affect density? If so, state how. Explain your rease Fat the above temperatures. Does b. Would temperature be a significant source of error for this experiment? Explain your reasoning. 2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities:...
the 3 pages deal with limiting reactant and percentage yield. the mixture starts out as a...
the 3 pages deal with limiting reactant and percentage yield.
the mixture starts out as a bright blue and when spinning in the
cup smokes ans starts to tirn a black color and the end result is a
brown color. then the funnel part was a light blue color.
1. Weigh approximately 7.0 g of CuCl2 and place them in the 100 ml beaker. Record the exact mass in the data table below. Note the appearance of the CuCl2 crystals...
can you answerthe lab questions 1-5? 1. Explain why methanol and sodium carbonate were both able...
can
you answerthe lab questions 1-5?
1. Explain why methanol and sodium carbonate were both able to dissolve in water, but only sodium carbonate was able to conduct electricity in solution. (3 pts) 2. Look up the chemical structures of methane and methanol. Based on their structures, which of the two do you expect to be water soluble? Explain your answer. (4 pts) 3. What are the main structural differences and similarities between methanol and 1-decanol. Explain the observed difference...
numbers 1-3 Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1....
numbers 1-3
Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1. Why is concentrated sulfuric acid emploved in thie on? What is the electrophile that is produced by the reaction of sulfuric acid and nitric acid? 2. Why is it important to maintain the reaction temperature low and the addition of nitric acid-sulfuric acid mixture carried out slowly? 3. Explain why concentrated H2SO4, not concentrated HC1, was used in this experiment? 4. Which ring of...
Density of Planets and Moons Lab Objectives: In this lab you will learn: Part 1 –...
Density of Planets and Moons Lab Objectives: In this lab you will learn: Part 1 – What density is, and how to experimentally determine it Part 2 – To calculate various physical quantities for the planet Mercury Part 3 – Group major solar system bodies by density Part 1. DENSITY Definition – Density =mass / volume. Symbolically, we write this as , where 1) ρ (the Greek letter “rho”) is the density, 2) m is mass, and 3) V is...
3-5 pls Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1....
3-5 pls
Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1. Why is concentrated sulfuric acid employed in this reaction? What is the electrophile that is produced by the reaction of sulfuric acid and nitric acid? 2. Why is it important to maintain the reaction temperature low and the addition of nitric acid-sulfuric acid mixture carried out slowly? 3. Explain why concentrated H2SO, not concentrated HCl, was used in this experiment? 4. Which ring of...
Pre-lab Questions for Experiment #11 1) Will a precipitate form when 0.150 L of 0.10 M PHNO The K, for Polis 1.2 x...
Pre-lab Questions for Experiment #11 1) Will a precipitate form when 0.150 L of 0.10 M PHNO The K, for Polis 1.2 x 10-)(Show your calculatio) . 100 L 0,30 M N e w Lof 1 2) Calculate whether a precipitate will form if 2.00 mL of 60 M N aredided to (Show your calculations) -1.8 x 10 and K [FeOH) - 1610) INH! 10 0 4 (Given that N oir 3) Solid silver chromate is added to pure water...
Analysis questions part 1 and part 2. Data and Calculations- Length, Mass, Volume, Density and Time...
Analysis questions part 1 and part 2.
Data and Calculations- Length, Mass, Volume, Density and Time Part 1: Estimating Various Measurements Table 1 Estimated Actual % Difference 1.00 m 15 m 93.33% Length (m) Time (s) Mass (g) Part 2: Measurements Using Various Instruments Note: As always, be sure to record to the precision each device is capable of. Measurement of your hand span: 16 cm First Object Measured: eScience Lab Box Table 2 Length Width Height Volume 2.00 hands...
Name Section/CRN POST LABORATORY QUESTIONS 1. A student weighs out 3.52 g. of salicylic acid in a 100 ml flask and adds 2.3 mL of acetic anhydride (density 1.080 g/mL). Determine the maximum (theoretical) number of grams of acetylsalicylic acid she can prepare. 2. If the student obtained 4.21 g, of aspirin, calculate the % yield. Briefly, explain why she might have obtained this amount of product. 3. The solubility of Aspirin (acetylsalicylic acid) at 25 °C is 3.0 mg/mL...
Post-Lab Questions Write your answers in pen and include tontits 1. Draw a structure for water, showing that it is a polar solvent. 2. Draw a structure for CCL, carbon tetrachloride. Is this a polar or non-polar solvent? 3. Generally, what effect does increasing temperature have on the solubility of a substance? 4. Why are "spectator ions" not included in the net ionic reaction? 5. What did you observe in this experiment that tells us whether wax is polar or...
at 15.0°C 20.0°C, 22.0°C, 25.0°C, Post-Laboratory Questions 1. Write down the values for the density of water at 15.0°C, 20. and 28.0°C. a. Compare the values of the density of water at the above temp temperature affect density? If so, state how. Explain your rease Fat the above temperatures. Does b. Would temperature be a significant source of error for this experiment? Explain your reasoning. 2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities:...
the 3 pages deal with limiting reactant and percentage yield.
the mixture starts out as a bright blue and when spinning in the
cup smokes ans starts to tirn a black color and the end result is a
brown color. then the funnel part was a light blue color.
1. Weigh approximately 7.0 g of CuCl2 and place them in the 100 ml beaker. Record the exact mass in the data table below. Note the appearance of the CuCl2 crystals...
can
you answerthe lab questions 1-5?
1. Explain why methanol and sodium carbonate were both able to dissolve in water, but only sodium carbonate was able to conduct electricity in solution. (3 pts) 2. Look up the chemical structures of methane and methanol. Based on their structures, which of the two do you expect to be water soluble? Explain your answer. (4 pts) 3. What are the main structural differences and similarities between methanol and 1-decanol. Explain the observed difference...
numbers 1-3
Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1. Why is concentrated sulfuric acid emploved in thie on? What is the electrophile that is produced by the reaction of sulfuric acid and nitric acid? 2. Why is it important to maintain the reaction temperature low and the addition of nitric acid-sulfuric acid mixture carried out slowly? 3. Explain why concentrated H2SO4, not concentrated HC1, was used in this experiment? 4. Which ring of...
3-5 pls
Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1. Why is concentrated sulfuric acid employed in this reaction? What is the electrophile that is produced by the reaction of sulfuric acid and nitric acid? 2. Why is it important to maintain the reaction temperature low and the addition of nitric acid-sulfuric acid mixture carried out slowly? 3. Explain why concentrated H2SO, not concentrated HCl, was used in this experiment? 4. Which ring of...
Pre-lab Questions for Experiment #11 1) Will a precipitate form when 0.150 L of 0.10 M PHNO The K, for Polis 1.2 x 10-)(Show your calculatio) . 100 L 0,30 M N e w Lof 1 2) Calculate whether a precipitate will form if 2.00 mL of 60 M N aredided to (Show your calculations) -1.8 x 10 and K [FeOH) - 1610) INH! 10 0 4 (Given that N oir 3) Solid silver chromate is added to pure water...
Analysis questions part 1 and part 2.
Data and Calculations- Length, Mass, Volume, Density and Time Part 1: Estimating Various Measurements Table 1 Estimated Actual % Difference 1.00 m 15 m 93.33% Length (m) Time (s) Mass (g) Part 2: Measurements Using Various Instruments Note: As always, be sure to record to the precision each device is capable of. Measurement of your hand span: 16 cm First Object Measured: eScience Lab Box Table 2 Length Width Height Volume 2.00 hands...
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