Your fabric weighs 10.20 g. The wet weight immediately after padding is 18.87 g. After drying...
Your fabric weighs 10.20 g. The wet weight immediately after padding is 18.87 g. After drying and curing, your sample weighs 11.02 g. What is the % Dry Add-on?
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Your fabric weighs 10.20 g. The wet weight immediately after
padding is 18.87 g. After drying...
you are dying a sample of Ba3(PO4)2. after 5 minutes of drying it weighs 1.2034 g....
you are dying a sample of Ba3(PO4)2. after 5 minutes of drying it weighs 1.2034 g. you continue to dry the sample for another 5 minutes and now it weighs 1.9345 g. what is the percent change in mass?
Please show steps and explain briefly answers 9. A wet sample weighs 100 g was dried...
Please show steps and explain briefly answers
9. A wet sample weighs 100 g was dried up in the oven. The dry weight-80 g, then its moisture content is a) b) c) d) 80% 20% 25% none of the above (10 points) 10. The rock quality designation (RQD) is calculated by a)Dividing the length of all retrieved rock pieces by length of rock core b) Diiding the total length of all rock pieces 4" and longer by the length of...
For some reactions having trace amounts of water in your solvent can be a problem. In...
For some reactions having trace amounts of water in your solvent can be a problem. In drier states like Arizona you can get away with buying dry solvents. However, in Florida as soon as you open the bottle up the solvent is saturated with water due to the humidity. Therefore to do water sensitive chemistry in Florida you need to dry the solvents yourself just before use. Often you’ll do this using a commercially available Solvent Purification System. However, if...
A student weighs out a 2.546 g sample of solid CoCO3●nH2O. Upon heating the following reaction...
A student weighs out a 2.546 g sample of solid CoCO3●nH2O. Upon heating the following reaction occurs: CoCO3●nH2O(s)CoO(s) + CO2(g) + n H2O(g) After the reaction has gone to completion the mass of solid remaining is 0.840 g. a. How many moles of CO2 gas were formed? You must show your work to receive any credit. b. What is the molecular weight of CoCO3●nH2O? c. What is the value of “n”? Round to the nearest whole number. You must show...
The aluminum cup inside your calorimeter weighs 41.55 g. You add 59.21 g of 1.0 M...
The aluminum cup inside your calorimeter weighs 41.55 g. You add 59.21 g of 1.0 M acetic acid solution and 50.03 g of 1.0 M sodium hydroxide solution to the calorimeter. Both solutions have an initial temperature of 19.9 °C, and the final temperature after addition is 26.8 °c. What is the molar enthalpy of neutralization, in units of kJ/mol? Assume that: the calorimeter is completely insulated the heat capacity of the empty calorimeter is the heat capacity of the...
weight of cylinder 10.48g weight of cylinder with of isopentyl alcohol 14.55g weight of collecting flask...
weight of cylinder 10.48g
weight of cylinder with of isopentyl alcohol 14.55g
weight of collecting flask 56.77 g
weight of collecting flask with product 60.42g
I need help getting theoretical yield and % yield.
Experiment 12 Isopentyl Acetate (Banana Oil) 93 Rasmussen, P. W. Qualitative Analysis by Gas Chromatography-G.C. versus the Nose in Formu- lation of Artificial Fruit Flavors." Journal of Chemical Education, 61 (January 1984): 62. Shreve, R. N., and Brink, J. Chemical Process Industries, 4th ed. New York:...
i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone)...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
What is the theoretical yield (in grams) and percent yield of your triphenylmethanol product in this...
What is the theoretical yield (in grams) and percent yield of your
triphenylmethanol product in this experiment? (Weight of
triphenylmethanol: 0.060g)
BACKGROUND AND THEORY The Grignard reaction was one of the first organometallic reactions discovered and is still one of the most useful synthetically. By reacting an organohalide (usually a bromide) with magnesium in ethereal solvent, carbon becomes a nucleophile. Grignard reagents are the starting points for the syntheses of many alkanes, primary, secondary, and tertiary alcohols, alkenes, and carboxylic...
Experiment . the reduction of bencil (March 2020) Your name Sodium borohydride is a convert recent...
Experiment . the reduction of bencil (March 2020) Your name Sodium borohydride is a convert recent for the reduction of dehydes and ketones to 1" and 2 alcohols, respectively. The mechanism of the reaction - (below) is straightforward and is driven by boron's affinity for oxygen. In addition, given borohydride's remarkably low reactivity with OH groups under neutral and especially basic conditions, this reaction can be done in alcohol solvents. This means that (unlike LAH or Grignard reactions) no separate...
QUESTIONS TO ANSWER: Prepare a table of all chemicals used with the structure and purpose of...
QUESTIONS TO ANSWER:
Prepare a table of all chemicals used with the structure and
purpose of each.
Calculate the theoretical yield by finding limiting reactant of
the experiment by converting reactants to product (remember to show
all calculations used)
Calculate the percent yield using the limiting reactant
Calculate the Rf for triphenylmethanol. If there are two dots,
determine which one is triphenylmethanol.. ( I did not provide
data. Please let me know how I Would do this if I did)...
Please show steps and explain briefly answers
9. A wet sample weighs 100 g was dried up in the oven. The dry weight-80 g, then its moisture content is a) b) c) d) 80% 20% 25% none of the above (10 points) 10. The rock quality designation (RQD) is calculated by a)Dividing the length of all retrieved rock pieces by length of rock core b) Diiding the total length of all rock pieces 4" and longer by the length of...
The aluminum cup inside your calorimeter weighs 41.55 g. You add 59.21 g of 1.0 M acetic acid solution and 50.03 g of 1.0 M sodium hydroxide solution to the calorimeter. Both solutions have an initial temperature of 19.9 °C, and the final temperature after addition is 26.8 °c. What is the molar enthalpy of neutralization, in units of kJ/mol? Assume that: the calorimeter is completely insulated the heat capacity of the empty calorimeter is the heat capacity of the...
weight of cylinder 10.48g
weight of cylinder with of isopentyl alcohol 14.55g
weight of collecting flask 56.77 g
weight of collecting flask with product 60.42g
I need help getting theoretical yield and % yield.
Experiment 12 Isopentyl Acetate (Banana Oil) 93 Rasmussen, P. W. Qualitative Analysis by Gas Chromatography-G.C. versus the Nose in Formu- lation of Artificial Fruit Flavors." Journal of Chemical Education, 61 (January 1984): 62. Shreve, R. N., and Brink, J. Chemical Process Industries, 4th ed. New York:...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
What is the theoretical yield (in grams) and percent yield of your
triphenylmethanol product in this experiment? (Weight of
triphenylmethanol: 0.060g)
BACKGROUND AND THEORY The Grignard reaction was one of the first organometallic reactions discovered and is still one of the most useful synthetically. By reacting an organohalide (usually a bromide) with magnesium in ethereal solvent, carbon becomes a nucleophile. Grignard reagents are the starting points for the syntheses of many alkanes, primary, secondary, and tertiary alcohols, alkenes, and carboxylic...
Experiment . the reduction of bencil (March 2020) Your name Sodium borohydride is a convert recent for the reduction of dehydes and ketones to 1" and 2 alcohols, respectively. The mechanism of the reaction - (below) is straightforward and is driven by boron's affinity for oxygen. In addition, given borohydride's remarkably low reactivity with OH groups under neutral and especially basic conditions, this reaction can be done in alcohol solvents. This means that (unlike LAH or Grignard reactions) no separate...
QUESTIONS TO ANSWER:
Prepare a table of all chemicals used with the structure and
purpose of each.
Calculate the theoretical yield by finding limiting reactant of
the experiment by converting reactants to product (remember to show
all calculations used)
Calculate the percent yield using the limiting reactant
Calculate the Rf for triphenylmethanol. If there are two dots,
determine which one is triphenylmethanol.. ( I did not provide
data. Please let me know how I Would do this if I did)...
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