sodium chloride, calcium chloride, and urea have all been used to melt ice from sidewalks. If...
sodium chloride, calcium chloride, and urea have all been used to melt ice from sidewalks. If each of these substances cost the same per gram which would be the most effective ice melter? (Ignoring environmental factors). Show your work and support your choice.
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sodium chloride, calcium chloride, and urea have all been used
to melt ice from sidewalks. If...
Magnesium chloride is often used 10 melt ice on sidewalks. Considering that the solubility of magnesium...
Magnesium chloride is often used 10 melt ice on sidewalks. Considering that the solubility of magnesium chloride (95.21 g/mol) in water is 54.3 g per 100.0 g of water, what is the lowest temperature that you would expect to be able to melt ice with magnesium chloride? Assume ideal behavior. [K_f(water) = 1.86 degree C/m]
Which of the following substances would be most effective at melting ice and snow from sidewalks...
Which of the following substances would be most effective at melting ice and snow from sidewalks and roads: glucose (C6H206), lithium chloride (LiCl), sodium chloride (NaCl), calcium chloride (CaCl2?! Explain. Hint... you need to consider the molar masses of the substances in addition to the value of the van't Hoff factor. (2 marks) Ma 42.4g/mol Wuer: 58,4g/ml 40 = 180 g/ml)
Sodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride...
Sodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride (CaCl2) is sometimes used for this purpose too. Let us compare the effectiveness of equal masses of these two compounds in lowering the freezing point of water by calculating the freezing point depression of solutions containing 230. g of each salt in 1.00 kg of water. (An advantage of CaCl2 is that it acts more quickly because it is hygroscopic, that is, it absorbs...
in FRIEDEL-CRAFTS ACYLATION AND COLUMN CHROMATOGRAPHY lab (2 pts) Amount of acetyl chloride used ____4______(drops) (each...
in FRIEDEL-CRAFTS ACYLATION AND COLUMN CHROMATOGRAPHY lab
(2 pts) Amount of acetyl chloride used ____4______(drops) (each
drop is 0.01 mL) _____2______(equivalents) Based on the amount of
ferrocene you began the Friedel-Crafts reaction with, determine the
percent yield of acetylferrocene, diacetylferrocene, and the
percent recovery of unreacted ferrocene (show work)
react by 0.100 g of ferrocene at beginning
got 0 g of ferrocene, 0.012g of diacetylferrocene , 0.017g of
acetylferrocene
REACTION PROCEDURE: To a 5 mL conical vial, add a spin...
Extended Learning Exercise. You have been asked to prepare a quick estimate of the construction cost...
Extended Learning Exercise. You have been asked to prepare a quick estimate of the construction cost for a coal-fired electricity generating plant and facilities. A work breakdown structure (levels one through three) is shown in the table below EE! Click the icon to view the work breakdown structure Click the icon to view the available information What is your estimated 2019 cost for building the coal-fired generating facility? Summarize your calculations in a cost estimating worksheet, and state the assumptions...
Introduction: The technique used to separate an organic compound from a mixture of compounds is called...
Introduction: The technique used to separate an organic compound from a mixture of compounds is called Extraction. Extraction process selectively dissolves one or more of the mixture compounds into a suitable solvent. The solution of these dissolved compounds is referred to as the Extract. Here the organic solvent dichloromethane is used to extract caffeine from an aqueous extract of tea leaves because caffeine is more soluble in dichloromethane (140 mg/ml) than it is in water (22 mg/ml). However, there are...
Please show ALL work, including formulas used and equations for excel You have been engaged as...
Please show ALL work, including formulas used and equations for excel You have been engaged as a consultant to design a master budget model and then to assist Helping Hand Corp. in making some management decisions based on that master budget. Helping Hand is a small, rapidly growing wholesaler of consumer electronic products. The company’s main product lines are small kitchen appliances and power tools. The marketing manager has recently completed a sales forecast. She believes the company’s sales will...
Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
1. Oral acetaminophen has been ordered for a young child who has a fever. A liquid...
1. Oral acetaminophen has been ordered for a young child who has a fever. A liquid form has been obtained by the nurse to increase the chance of problem free administration. Prior to administration, the nurse is going through the rights of medication administration. When confirming the right dose, what term is the most appropriate? a. "160 mg" b. "one teaspoon" c. "one third of a tablespoon d. "SmL 2. A pregnant woman asks why she needs to take a...
5. When all of the sample to be collected has left the column, will the drop...
5. When all of the sample to be collected has left the
column, will the drop of solution coming off the tip of the column
be acidic, basic or neutral?
6. How many H+ ions would be displaced from the ion
exchange column by 1 Cu2+ ion?
7. Binding sites on the ion exchange resin are saturated
with which ion before the sample solution is added?
8. Ions are displaced from the resin binding sites by
any ion that has...
Magnesium chloride is often used 10 melt ice on sidewalks. Considering that the solubility of magnesium chloride (95.21 g/mol) in water is 54.3 g per 100.0 g of water, what is the lowest temperature that you would expect to be able to melt ice with magnesium chloride? Assume ideal behavior. [K_f(water) = 1.86 degree C/m]
Which of the following substances would be most effective at melting ice and snow from sidewalks and roads: glucose (C6H206), lithium chloride (LiCl), sodium chloride (NaCl), calcium chloride (CaCl2?! Explain. Hint... you need to consider the molar masses of the substances in addition to the value of the van't Hoff factor. (2 marks) Ma 42.4g/mol Wuer: 58,4g/ml 40 = 180 g/ml)
in FRIEDEL-CRAFTS ACYLATION AND COLUMN CHROMATOGRAPHY lab
(2 pts) Amount of acetyl chloride used ____4______(drops) (each
drop is 0.01 mL) _____2______(equivalents) Based on the amount of
ferrocene you began the Friedel-Crafts reaction with, determine the
percent yield of acetylferrocene, diacetylferrocene, and the
percent recovery of unreacted ferrocene (show work)
react by 0.100 g of ferrocene at beginning
got 0 g of ferrocene, 0.012g of diacetylferrocene , 0.017g of
acetylferrocene
REACTION PROCEDURE: To a 5 mL conical vial, add a spin...
Extended Learning Exercise. You have been asked to prepare a quick estimate of the construction cost for a coal-fired electricity generating plant and facilities. A work breakdown structure (levels one through three) is shown in the table below EE! Click the icon to view the work breakdown structure Click the icon to view the available information What is your estimated 2019 cost for building the coal-fired generating facility? Summarize your calculations in a cost estimating worksheet, and state the assumptions...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
1. Oral acetaminophen has been ordered for a young child who has a fever. A liquid form has been obtained by the nurse to increase the chance of problem free administration. Prior to administration, the nurse is going through the rights of medication administration. When confirming the right dose, what term is the most appropriate? a. "160 mg" b. "one teaspoon" c. "one third of a tablespoon d. "SmL 2. A pregnant woman asks why she needs to take a...
5. When all of the sample to be collected has left the
column, will the drop of solution coming off the tip of the column
be acidic, basic or neutral?
6. How many H+ ions would be displaced from the ion
exchange column by 1 Cu2+ ion?
7. Binding sites on the ion exchange resin are saturated
with which ion before the sample solution is added?
8. Ions are displaced from the resin binding sites by
any ion that has...
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