A flask was filled with 150.00 mL of ethanol. By weighing the flask before and after...
A flask was filled with 150.00 mL of ethanol. By weighing the flask before and after adding the ethanol, it was determined that the flask contained 118.40 g of ethanol. In a second experiment, 20.5362 g of metal beads were added to the flask, and the flask was again filled to the 150.00 mL mark with ethanol. The total mass of the metal plus alcohol in the flask was determined to be 141.67 g. What is the density of the metal in g/mL?
Homework Answers
since metal beads is solid
therefore total volume of solution is equal to the volume of
ethanol added. Accordingly density of metal calculated.
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A flask was filled with 150.00 mL of ethanol. By weighing the
flask before and after...
Q3) A drug compound for anticancer treatment, Platinol has a base structure of Pt(NH3)2Cl2. A var...
Q3) A drug compound for anticancer treatment, Platinol has a base structure of Pt(NH3)2Cl2. A variant form of the drug has the formula Pt2(NH3)4Cl3. For the variant form, calculate the mass percent of platinum. hint: Molar masses used Pt 195.084g/mol, N 14.0067g/mol, H 1.008g/mol, and Cl 35.453 g/mol. Q4) When Barium (density is 3.5 g/mL) reacts with sulfur (density is 2.04 g/mL) to form barium sulfide, each barium atom reacts with one sulfur atom. The mass ratio of barium to...
Having obtained the volume of a flask (25.001 mL), the student then emptied the flask and...
Having obtained the volume of a flask (25.001 mL), the student then emptied the flask and dried it. The mass of the empty stoppered flask was 25.710 g. To the empty flask they added pieces of a metal until the flask was about three-fourths full. The student weighed the stoppered flask and its metal contents and found that the mass was 162.071 g. They then filled the flask with water, stoppered it, and obtained a total mass of 167.932 g...
A technician tares a 100.0 mL volumetric flask at 150.00 g. After adding sodium chloride to the...
A technician tares a 100.0 mL volumetric flask at 150.00 g. After adding sodium chloride to the flask it then weighs 158.84 g. Assuming an error of 0.2 mL in the volumetric volume and 0.005 g in the weight, calculate the molar concentration of sodium chloride and its associated standard deviation.
2. A technician tares a 100.0 mL volumetric flask at 150.00 g After adding sodium chloride...
2. A technician tares a 100.0 mL volumetric flask at 150.00 g After adding sodium chloride to the flask it then weighs 158.84 g. Assuming an error of 0.2 mL in the volumetric volume and 0.005 g in the weight, calculate the molar concentration of sodium chloride and its associated standard deviation.
In lab you determine the mass of an empty Erlenmeyer flask to be 53.5g. After adding metal, the mass of the flask is now 95.6g. After filling the flask up to the top with water, its mass is now...
In lab you determine the mass of an empty Erlenmeyer flask to be 53.5g. After adding metal, the mass of the flask is now 95.6g. After filling the flask up to the top with water, its mass is now 130.0g You then empty the flask and refill it entirely with water. The mass of the flask full of water is 103.5g What is the density of the metal in g/ml? (The density of water is 1.00g/ml). You have 865g of...
2. I. M. Fumblefingers determined the mass of a 100 mL volumetric flask but did not...
2. I. M. Fumblefingers determined the mass of a 100 mL volumetric flask but did not notice that it contained about 1 mL of water. Fumblefingers then prepared an 8% sugar solution by transferring 8.00 g of sugar to the flask and filling to the mark with distilled water. I. M. then determined the mass of the flask plus the 8% sugar solution. a. Will the concentration of the solution be higher, lower, or no different from the correct value?...
(1) In the procedure, one step is to calibrate the volume of the flask you will...
(1) In the procedure, one step is to calibrate the volume of the flask you will use for the density determination. How is this done? The temperature of the water is measured. The mass of the water at the measurement line is measured. The volumes of several flasks are measured. The water when filled to the measurement line is poured into a second flask. (2) the density of the unknown metal is determined. What units are used in this determination?...
Please do 2,3 and 4 Experiment 3 Pr 1. A student weigh be 98.595 oth mark,...
Please do 2,3 and 4
Experiment 3 Pr 1. A student weigh be 98.595 oth mark, the stoppered flask is weighed again and the mass is found to be 204.274 & ment s an empty 100 mL. volumetric flask and stopper and finds the mass to g After adding 4.163 g of sugar to the flask, dissolving it, and filling the flask Calculate the density of this solution dm oS 629 2. Explain how to properly prepare a solution in...
A flask, at 25.0 oC, with a volume of 1.00 L is filled with an unknown...
A flask, at 25.0 oC, with a volume of 1.00 L is filled with an unknown gas to a pressure of 100.00 kPa. By weighing the flask before and after filling, it is found that the mass of the gas is 0.16 g. i. How many moles of gas are in the flask? ii. What is the molar mass of the gas?
a 25-mL volumetric flask with its stopper has a mass of 32.982g. the same flask, filled...
a 25-mL volumetric flask with its stopper has a mass of 32.982g. the same flask, filled to the line with an ethylene glycol ( C2H6O2, automotive antifreeze) solution, has a mass of 58.198g. What is the density of the ethylene glycol solution (g/cm3)?
Having obtained the volume of a flask (25.001 mL), the student then emptied the flask and dried it. The mass of the empty stoppered flask was 25.710 g. To the empty flask they added pieces of a metal until the flask was about three-fourths full. The student weighed the stoppered flask and its metal contents and found that the mass was 162.071 g. They then filled the flask with water, stoppered it, and obtained a total mass of 167.932 g...
2. A technician tares a 100.0 mL volumetric flask at 150.00 g After adding sodium chloride to the flask it then weighs 158.84 g. Assuming an error of 0.2 mL in the volumetric volume and 0.005 g in the weight, calculate the molar concentration of sodium chloride and its associated standard deviation.
In lab you determine the mass of an empty Erlenmeyer flask to be 53.5g. After adding metal, the mass of the flask is now 95.6g. After filling the flask up to the top with water, its mass is now 130.0g You then empty the flask and refill it entirely with water. The mass of the flask full of water is 103.5g What is the density of the metal in g/ml? (The density of water is 1.00g/ml). You have 865g of...
2. I. M. Fumblefingers determined the mass of a 100 mL volumetric flask but did not notice that it contained about 1 mL of water. Fumblefingers then prepared an 8% sugar solution by transferring 8.00 g of sugar to the flask and filling to the mark with distilled water. I. M. then determined the mass of the flask plus the 8% sugar solution. a. Will the concentration of the solution be higher, lower, or no different from the correct value?...
Please do 2,3 and 4
Experiment 3 Pr 1. A student weigh be 98.595 oth mark, the stoppered flask is weighed again and the mass is found to be 204.274 & ment s an empty 100 mL. volumetric flask and stopper and finds the mass to g After adding 4.163 g of sugar to the flask, dissolving it, and filling the flask Calculate the density of this solution dm oS 629 2. Explain how to properly prepare a solution in...
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