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An organic layer was dried with anhydrous MgSO4, which removed 1.2484 g of...
An anhydrous (water removed) salt has a formula mass of 245.321 g/mol. If the hydrated version...
An anhydrous (water removed) salt has a formula mass of 245.321 g/mol. If the hydrated version of the salt has 7 mol of water associated with it, what is the mass % of water in the hydrated salt? Report your answer to three digits after the decimal.
Are these answers correct? If they are incorrext please help me with the correct solution. thank...
Are these answers correct? If they are incorrext please help
me with the correct solution. thank you!
POS UUUJDOO ABORATORY ASSIGNMEN 1. Calculate the theoretical percentage of water for the following hydrates. (a) nickel(II) chloride dihydrate, NiCl2.2H20 INI x 58.69 = 58.64 2 CL X 35.45 - 70.90 2 H20 x 18.02 - 36.04 765. 63 2x 18.02 x 100-21.75% Had 20% 21.75% H2O (b) nickel(II) chloride hexahydrate, NiClz. 6H20 1 Ni X 59.69 58.64 2 x 35.45 = 35.45...
Metal Sulfate Hydrate lab (12 points) 4) An unknown metal sulfate hydrate (MSO XHO) sample with...
Metal Sulfate Hydrate lab (12 points) 4) An unknown metal sulfate hydrate (MSO XHO) sample with the recorded mass below is dissolved in water, and the sulfate ions from the sample precipitated with Ba2+ ions as BaSO4. A pre-massed filter paper is then used to collect the solid BaSO4. Experimental data was recorded below following same procedure in MSH lab. 0.6939 96.06 g/mol Molar mass of SO42- PARTA Mass of unknown metal sulfate hydrate (MSH) Mass of unknown sample sulfate...
CHM 010 On-Line Lab, Formula of a Hydrate PURPOSE: To determine the formula of Cuso..x H20....
CHM 010 On-Line Lab, Formula of a Hydrate PURPOSE: To determine the formula of Cuso..x H20. In other words, to determine the value of "X". PROCEDURE: When copper(II) sulfate x hydrate, a blue crystalline solid containing embedded water molecules (called a hydrate), is heated in air, it loses the water molecules and the blue solid is transformed to a white anhydrous (no water) crystal known as anhydrous copper(II) sulfate. The "x" represents a whole number of water molecules attached to...
i need help with questions A-E please The Mole Concept: Chemical Formula of a Hydrate- Lab...
i need help with questions A-E please
The Mole Concept: Chemical Formula of a Hydrate- Lab Report Assistant Exercise 1: Water of Hydration Data Table 1. Alum Data. Object Mass (g) Aluminum Cup (Empty) 3 Aluminum Cup +2.00 grams of Alum5 Aluminum Cup + Alum After 1 Heating 4.44 Aluminum Cup + Alum After 2 Heating 3.52 Mass of Released HO 1.48 Molecular Mass of H,0 18.015 Moles of Released H,0 OU54 Questions: A) Calculate the moles of anhydrous (dry)...
In the laboratory, a paste specimen was prepared using 45 g of water and 100 g...
In the laboratory, a paste specimen was prepared using 45 g of water and 100 g of cement then sealed to prevent the loss of water. The paste specimen was cured for 28 days in the constant room temperature. After the 28 days of curing period, a sample from the paste specimen was obtained by breaking off the specimen and the sample was dried in the oven at 105°C for 24 hours. After this oven drying, the sample was then...
please Help no idea Name: Section: Date: CH203-F15 Organic Laboratory: Experiment 1 Pre-lab exercise In addition...
please Help no idea
Name: Section: Date: CH203-F15 Organic Laboratory: Experiment 1 Pre-lab exercise In addition to coming to lab with the prepared notebook, please complete and hand in this completed sheet before the start of the lab. This will also be graded and returned to you with the lab report. Many organic materials are liquids at room temperature, sometimes volatile liquids. Students need to learn the best way of measuring and dispensing these materials in reactions. For example, consider...
first page is equillibrium, 2-4 please 6. An equation for the gaseous reaction is shown below...
first page is equillibrium, 2-4 please
6. An equation for the gaseous reaction is shown below N2(g) + 3H2(g) 2NH3(g) + Heat Tell which direction the equilibrium will shift for each of the following conditions: a. N2 is added b. Nz is removed c. Temperature is decreased d. Temperature is increased e. NH3 removed f. NHz is added g. H2 is added h. Hz is removed i. Pressure is increased j. Pressure is decreased k. Volume is increased 1. Volume...
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...
using the procedure above complete the stoichiometry table Procedure In an oven-dried, 100 ml round bottom...
using the procedure above complete the stoichiometry
table
Procedure In an oven-dried, 100 ml round bottom flask containing magnetic stirring bar was added hydrobenzoin (1.0 8.4.7 mmol), anhydrous iron(III) chloride (0.3 g, 1.8 mmol), and anhydrous acetone (30 ml). The mixture was heated to reflux and stirred for 30 min. The reaction mixture was cooled tort and transferred to a separatory funnel containing 10% aq potassium carbonate (10 mL). Water (50 mL) was added and the aqueous solution was extracted...
Are these answers correct? If they are incorrext please help
me with the correct solution. thank you!
POS UUUJDOO ABORATORY ASSIGNMEN 1. Calculate the theoretical percentage of water for the following hydrates. (a) nickel(II) chloride dihydrate, NiCl2.2H20 INI x 58.69 = 58.64 2 CL X 35.45 - 70.90 2 H20 x 18.02 - 36.04 765. 63 2x 18.02 x 100-21.75% Had 20% 21.75% H2O (b) nickel(II) chloride hexahydrate, NiClz. 6H20 1 Ni X 59.69 58.64 2 x 35.45 = 35.45...
Metal Sulfate Hydrate lab (12 points) 4) An unknown metal sulfate hydrate (MSO XHO) sample with the recorded mass below is dissolved in water, and the sulfate ions from the sample precipitated with Ba2+ ions as BaSO4. A pre-massed filter paper is then used to collect the solid BaSO4. Experimental data was recorded below following same procedure in MSH lab. 0.6939 96.06 g/mol Molar mass of SO42- PARTA Mass of unknown metal sulfate hydrate (MSH) Mass of unknown sample sulfate...
CHM 010 On-Line Lab, Formula of a Hydrate PURPOSE: To determine the formula of Cuso..x H20. In other words, to determine the value of "X". PROCEDURE: When copper(II) sulfate x hydrate, a blue crystalline solid containing embedded water molecules (called a hydrate), is heated in air, it loses the water molecules and the blue solid is transformed to a white anhydrous (no water) crystal known as anhydrous copper(II) sulfate. The "x" represents a whole number of water molecules attached to...
i need help with questions A-E please
The Mole Concept: Chemical Formula of a Hydrate- Lab Report Assistant Exercise 1: Water of Hydration Data Table 1. Alum Data. Object Mass (g) Aluminum Cup (Empty) 3 Aluminum Cup +2.00 grams of Alum5 Aluminum Cup + Alum After 1 Heating 4.44 Aluminum Cup + Alum After 2 Heating 3.52 Mass of Released HO 1.48 Molecular Mass of H,0 18.015 Moles of Released H,0 OU54 Questions: A) Calculate the moles of anhydrous (dry)...
In the laboratory, a paste specimen was prepared using 45 g of water and 100 g of cement then sealed to prevent the loss of water. The paste specimen was cured for 28 days in the constant room temperature. After the 28 days of curing period, a sample from the paste specimen was obtained by breaking off the specimen and the sample was dried in the oven at 105°C for 24 hours. After this oven drying, the sample was then...
please Help no idea
Name: Section: Date: CH203-F15 Organic Laboratory: Experiment 1 Pre-lab exercise In addition to coming to lab with the prepared notebook, please complete and hand in this completed sheet before the start of the lab. This will also be graded and returned to you with the lab report. Many organic materials are liquids at room temperature, sometimes volatile liquids. Students need to learn the best way of measuring and dispensing these materials in reactions. For example, consider...
first page is equillibrium, 2-4 please
6. An equation for the gaseous reaction is shown below N2(g) + 3H2(g) 2NH3(g) + Heat Tell which direction the equilibrium will shift for each of the following conditions: a. N2 is added b. Nz is removed c. Temperature is decreased d. Temperature is increased e. NH3 removed f. NHz is added g. H2 is added h. Hz is removed i. Pressure is increased j. Pressure is decreased k. Volume is increased 1. Volume...
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...
using the procedure above complete the stoichiometry
table
Procedure In an oven-dried, 100 ml round bottom flask containing magnetic stirring bar was added hydrobenzoin (1.0 8.4.7 mmol), anhydrous iron(III) chloride (0.3 g, 1.8 mmol), and anhydrous acetone (30 ml). The mixture was heated to reflux and stirred for 30 min. The reaction mixture was cooled tort and transferred to a separatory funnel containing 10% aq potassium carbonate (10 mL). Water (50 mL) was added and the aqueous solution was extracted...
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