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Check in your lab manual to help this make sense: Mass of unknown sample: of unknown...
lected. (Assume 1 Cu atom per formula unit.) mass of the test tube and unknown sample...
lected. (Assume 1 Cu atom per formula unit.) mass of the test tube and unknown sample mass of test tube without the unknown sample mass of filter paper mass of filter paper and copper (Assume 1 Cu atohfaunknown copper compound from this data that a student col 14.603 g 13.437 g 0.633 g 1.096 g
is this right? Step No. 1. Identity Number of the Unknown 3. Mass of test tube...
is this right?
Step No. 1. Identity Number of the Unknown 3. Mass of test tube and total unknown 83.138 5. Mass of test tube and about half unknown g 1-978 7. Mass of test tube (empty) laeall # 2 #1 Mass of filter paper 12. Mass of filter paper and Cu Mass-of filter paper and-Cu 18. 20a. g Calculate Beaker #2 Beaker #1 Lఏ 1 Mass of Unknown sample 21 20b. Mass of recovered copper 22. e by mass...
You analyze a sample of unknown metal using the procedure n the lab manual. Your sample...
You analyze a sample of unknown metal using the procedure n the lab manual. Your sample of metal has a mass of 0.0714 g, and you determine that 0.00506 moles of hydrogen gas were generated in the experiment. What is the atomic mass of this unknown metal? Assume the stoichiometry given in equation 1 works for this unknown metal. Be sure to enter the correct number of significant figures in your answer. g/mol The objective of this experiment is to...
PartA: Penny-→ Cu2+(aq) Make sure it is dated prior to 1982. Record mass to nearest 0.001 I. Weig...
PartA: Penny-→ Cu2+(aq) Make sure it is dated prior to 1982. Record mass to nearest 0.001 I. Weigh a copper penny. grams. 2. Place 450 mL of distilled water in a clean 600-mL beaker. Place the beaker on a hotplate and heat until the water boils. Do not wait for the water to boil now, but proceed with the rest of the experiment. You will need this water for rinsing in step C3. CAUTION. You will generate poison°แs nitrogen dioxide...
Show work as well Your T. A.'s Name Lab meeting time Your Name Pre-Laboratory Assignment (Part...
Show work as well
Your T. A.'s Name Lab meeting time Your Name Pre-Laboratory Assignment (Part 3) 1. A student determined percent of Br in a sample of an unknown bromide gravimetrically by dissolving 1.691 of solid unknown in water, adding excess of AgNO, and precipitating AgBr. He obtained 3.450 g of AgBr. Using these data, calculate % bromide in the unknown. (Give set-up and numerical answer. If you use more than one step in your calculations, show all work.)...
15. What are you removing by washing? 16. What color is your copper sample? 18. Suggest...
15. What are you removing by washing? 16. What color is your copper sample? 18. Suggest possible sources of error in this experiment. EXPERIMENT REPORT SHEET Chemical Reactions of Copper 7 and Percent Yield 1. Initial mass of copper 2. Mass of copper and evaporating dish 3. Mass of evaporating dish 4. Mass of recovered copper 5. Percent yield (show calculations) 0.52. 47.62 47.19 0.43 82.69% 6. Describe the reaction Cu(s) + HNO3(aq) → 7. Describe the reaction Cu(NO3)2(aq) +...
4 A common method for analyzing for the nickel content of a sample is to use...
4 A common method for analyzing for the nickel content of a sample is to use a precipitation reaction. Adding the organic compound dimethylglyoscime to a solution con- taining Nions precipitates a red solid Wwe care Derive the empirical formula for the red solid based on the following composition: Ni, 20.315%; C, 33.258%; H, 4.884%; 0,22.151%, and N, 19.392%. (95) . The reaction of methane and water is one way to y prepare hydrogen for use as a fuel CH...
I really need help understanding the second question? 2.) calculate the percent mass in your hydrate....
I really need help understanding the second question?
2.) calculate the percent mass in your hydrate. If the
copper(ii) sulfate hydrate should contain 36.08% by mass of water,
what is the % error of your experimental result?
4. Decant about 1/4 of the solution into another clean test tube. In the fume hood, carefully add I drop of concentrated ammonium hydroxide (aqueous ammonia) into the test tube and gently swirl. KEEP YOUR NOSE AWAY FROM THE AQUEOUS AMMONIA FUMES! Record...
PRE-LABORATORY QUESTIONS NAME: 1. According to the experimental procedure written above which cation in your sample...
PRE-LABORATORY QUESTIONS NAME: 1. According to the experimental procedure written above which cation in your sample should be identified first if it is indeed in the sample? 2. In what phase is the first cation supposed to be identified, in solid or liquid phase? And in what color? 3. According to the experimental procedure written above which cation in your sample should be identified second if it is indeed in the sample? 4. In what phase is the second cation...
2. Three students from your lab have to determine a boiling point of an unknown sample...
2. Three students from your lab have to determine a boiling point of an unknown sample that is supposed to be butanone (Bp.-80°C). Although, all three students have conducted their experiment eorrectly, they came up withe different values: 79°C, 84°C and 75°C. a)Explain what could have beon the source of crror if the sample given to the students is a pure sample and student carried out their measurements properly. b) Propose a solution to correct these diverging data if you...
lected. (Assume 1 Cu atom per formula unit.) mass of the test tube and unknown sample mass of test tube without the unknown sample mass of filter paper mass of filter paper and copper (Assume 1 Cu atohfaunknown copper compound from this data that a student col 14.603 g 13.437 g 0.633 g 1.096 g
is this right?
Step No. 1. Identity Number of the Unknown 3. Mass of test tube and total unknown 83.138 5. Mass of test tube and about half unknown g 1-978 7. Mass of test tube (empty) laeall # 2 #1 Mass of filter paper 12. Mass of filter paper and Cu Mass-of filter paper and-Cu 18. 20a. g Calculate Beaker #2 Beaker #1 Lఏ 1 Mass of Unknown sample 21 20b. Mass of recovered copper 22. e by mass...
You analyze a sample of unknown metal using the procedure n the lab manual. Your sample of metal has a mass of 0.0714 g, and you determine that 0.00506 moles of hydrogen gas were generated in the experiment. What is the atomic mass of this unknown metal? Assume the stoichiometry given in equation 1 works for this unknown metal. Be sure to enter the correct number of significant figures in your answer. g/mol The objective of this experiment is to...
PartA: Penny-→ Cu2+(aq) Make sure it is dated prior to 1982. Record mass to nearest 0.001 I. Weigh a copper penny. grams. 2. Place 450 mL of distilled water in a clean 600-mL beaker. Place the beaker on a hotplate and heat until the water boils. Do not wait for the water to boil now, but proceed with the rest of the experiment. You will need this water for rinsing in step C3. CAUTION. You will generate poison°แs nitrogen dioxide...
Show work as well
Your T. A.'s Name Lab meeting time Your Name Pre-Laboratory Assignment (Part 3) 1. A student determined percent of Br in a sample of an unknown bromide gravimetrically by dissolving 1.691 of solid unknown in water, adding excess of AgNO, and precipitating AgBr. He obtained 3.450 g of AgBr. Using these data, calculate % bromide in the unknown. (Give set-up and numerical answer. If you use more than one step in your calculations, show all work.)...
15. What are you removing by washing? 16. What color is your copper sample? 18. Suggest possible sources of error in this experiment. EXPERIMENT REPORT SHEET Chemical Reactions of Copper 7 and Percent Yield 1. Initial mass of copper 2. Mass of copper and evaporating dish 3. Mass of evaporating dish 4. Mass of recovered copper 5. Percent yield (show calculations) 0.52. 47.62 47.19 0.43 82.69% 6. Describe the reaction Cu(s) + HNO3(aq) → 7. Describe the reaction Cu(NO3)2(aq) +...
4 A common method for analyzing for the nickel content of a sample is to use a precipitation reaction. Adding the organic compound dimethylglyoscime to a solution con- taining Nions precipitates a red solid Wwe care Derive the empirical formula for the red solid based on the following composition: Ni, 20.315%; C, 33.258%; H, 4.884%; 0,22.151%, and N, 19.392%. (95) . The reaction of methane and water is one way to y prepare hydrogen for use as a fuel CH...
I really need help understanding the second question?
2.) calculate the percent mass in your hydrate. If the
copper(ii) sulfate hydrate should contain 36.08% by mass of water,
what is the % error of your experimental result?
4. Decant about 1/4 of the solution into another clean test tube. In the fume hood, carefully add I drop of concentrated ammonium hydroxide (aqueous ammonia) into the test tube and gently swirl. KEEP YOUR NOSE AWAY FROM THE AQUEOUS AMMONIA FUMES! Record...
PRE-LABORATORY QUESTIONS NAME: 1. According to the experimental procedure written above which cation in your sample should be identified first if it is indeed in the sample? 2. In what phase is the first cation supposed to be identified, in solid or liquid phase? And in what color? 3. According to the experimental procedure written above which cation in your sample should be identified second if it is indeed in the sample? 4. In what phase is the second cation...
2. Three students from your lab have to determine a boiling point of an unknown sample that is supposed to be butanone (Bp.-80°C). Although, all three students have conducted their experiment eorrectly, they came up withe different values: 79°C, 84°C and 75°C. a)Explain what could have beon the source of crror if the sample given to the students is a pure sample and student carried out their measurements properly. b) Propose a solution to correct these diverging data if you...
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