A 5.000 g sample of NiSO4. __H2O decomposed to give 2.755 g of anhydrous NiSO4 a)Determine...
A 5.000 g sample of NiSO4. __H2O decomposed to give 2.755 g of anhydrous NiSO4
a)Determine what the formula of the hydrate is?
b) What is the full chemical name for the hydrate? _____________________________________
c) What is the molar mass of the hydrate?
d) What is the mass % of water in the hydrate?
Homework Answers
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A 5.000 g sample of NiSO4. __H2O decomposed to give 2.755 g of
anhydrous NiSO4
a)Determine...
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A 1.252g sample of srcl2 h20 decomposed to give 1.167g of anhydrous SrCl2. what is the formula of the hydrate?
use the information given to calculate the formula for mass/molar mass of the anhydrous salt of...
use the information given to calculate the formula for
mass/molar mass of the anhydrous salt of your unknown sample(show
calculations)
B. Determine the Formula of an Unknown Hydrate Unknown sample number: 20 Nickel II Molecular formula of the unknown: 1. Mass of crucible + unknown hydrate Nisou "X"H60 (sulfate) 37.40g 36-3lg 1:09g 2. Mass of crucible 3. Mass of unknown hydrate( 1 - 2) 4. Mass of crucible + anhydrous salt a. after first heating b. after second heating 31.3919...
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in...
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in a dry, covered crucible and obtains a mass of 24.747 g for the crucible, cover, and sample. Earlier she had found that the crucible and cover weighed 23.599 g. She then heats the crucible to drive off the water of hydration, keeping the crucible at red heat for about 10 minutes with the cover slightly ajar. She then lets the crucible cool, and finds...
A 1.232 g sample of a magnesium sulfate hydrate is heated until its final mass is...
A 1.232 g sample of a magnesium sulfate hydrate is heated until its final mass is 0.602 g. What is the formula of the hydrate? Note: the molar mass of MgSO4 is 120.4 g/mol and the molar mass of water is 18.0 g/mol. MgSO4.5H20 a. O b. MgSO4.7H20 O c. MgSO4:3H20 d. MgSO4:H20
CUSU 420 4. A 1.082 g sample of Niso, . x H2O is heated to drive...
CUSU 420 4. A 1.082 g sample of Niso, . x H2O is heated to drive off the water leaving behind 0.596 g of anhydrous NiSO4. a. How much water was removed? (15) 0.4869 b. How many moles of Niso, were in the sample? (15) 0.596 -0.00385 mol Nisou c. How many moles of water were in the hydrate? (15) 0.486-18=0.027 mol H2O d. What is mole ratio? (15) 0.0027 7.00 mol 0.00385
1) When CuSO SHO is heated, it decomposes to anhydrous CuSO4 and water. Complete and balance...
1) When CuSO SHO is heated, it decomposes to anhydrous CuSO4 and water. Complete and balance the following reaction, CuSO4+ 5HO 2) What is the color for anhydrous salt of copper (II) sulfate (CuSO.)? What is the color for ionic hydrate compound of copper (II) sulfate pentahydrate (CuSO. SH:O)? 3) How would you test a colorless crystalline compound to determine whether it is a hydrate or not? 4) How many grams of CuSO4 5H20 are needed to prepare 50,0 mL...
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...
A 2.794-g sample of a mixture of anhydrous copper(II) sulfate, CuSO4, and copper(II) sulfate pentahydrate, CuSO4∙5H2O,was...
A 2.794-g sample of a mixture of anhydrous copper(II) sulfate, CuSO4, and copper(II) sulfate pentahydrate, CuSO4∙5H2O,was analyzed by heating todrive off the water in the hydrate.CuSO4∙5H2O(s)→CuSO4(s)+ 5 H2O(g)If the mass after heating was 2.578 g, determine the percentage of the hydrate in the original sample
i have no idea how to do this... 192 EQUIPMENT and CHEMICALS • wire gauze •...
i have no idea how to do this...
192 EQUIPMENT and CHEMICALS • wire gauze • 250-ml beaker - watchglass • alum, KAl(SO4)2-12H20 • unknown hydrate samples S PROCEDURE A. Percentage of Water in Alum Hydrate 1. Weigh a clean, dry, 250-ml beaker covered with a watch glass. Add about 0.8-1.2 g of alum hydrate into the beaker, and reweigh accurately. 2. Support the beaker and watchglass on a ring stand using a wire gauze (Figure 1). Heat the hydrate...
If an unknown hydrate, AC XH20, has a mass of 1.555 g before heating, and a...
If an unknown hydrate, AC XH20, has a mass of 1.555 g before heating, and a mass of 0.994 g after heating, what is the experimental percentage of water in the hydrate? f the anhydrous compound (AC) in the preceding problem has a molar mass of 160 g/mol, hat are the water of crystallization (X) and formula for the hydrate?
use the information given to calculate the formula for
mass/molar mass of the anhydrous salt of your unknown sample(show
calculations)
B. Determine the Formula of an Unknown Hydrate Unknown sample number: 20 Nickel II Molecular formula of the unknown: 1. Mass of crucible + unknown hydrate Nisou "X"H60 (sulfate) 37.40g 36-3lg 1:09g 2. Mass of crucible 3. Mass of unknown hydrate( 1 - 2) 4. Mass of crucible + anhydrous salt a. after first heating b. after second heating 31.3919...
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in a dry, covered crucible and obtains a mass of 24.747 g for the crucible, cover, and sample. Earlier she had found that the crucible and cover weighed 23.599 g. She then heats the crucible to drive off the water of hydration, keeping the crucible at red heat for about 10 minutes with the cover slightly ajar. She then lets the crucible cool, and finds...
A 1.232 g sample of a magnesium sulfate hydrate is heated until its final mass is 0.602 g. What is the formula of the hydrate? Note: the molar mass of MgSO4 is 120.4 g/mol and the molar mass of water is 18.0 g/mol. MgSO4.5H20 a. O b. MgSO4.7H20 O c. MgSO4:3H20 d. MgSO4:H20
CUSU 420 4. A 1.082 g sample of Niso, . x H2O is heated to drive off the water leaving behind 0.596 g of anhydrous NiSO4. a. How much water was removed? (15) 0.4869 b. How many moles of Niso, were in the sample? (15) 0.596 -0.00385 mol Nisou c. How many moles of water were in the hydrate? (15) 0.486-18=0.027 mol H2O d. What is mole ratio? (15) 0.0027 7.00 mol 0.00385
1) When CuSO SHO is heated, it decomposes to anhydrous CuSO4 and water. Complete and balance the following reaction, CuSO4+ 5HO 2) What is the color for anhydrous salt of copper (II) sulfate (CuSO.)? What is the color for ionic hydrate compound of copper (II) sulfate pentahydrate (CuSO. SH:O)? 3) How would you test a colorless crystalline compound to determine whether it is a hydrate or not? 4) How many grams of CuSO4 5H20 are needed to prepare 50,0 mL...
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 have no idea how to do this...
192 EQUIPMENT and CHEMICALS • wire gauze • 250-ml beaker - watchglass • alum, KAl(SO4)2-12H20 • unknown hydrate samples S PROCEDURE A. Percentage of Water in Alum Hydrate 1. Weigh a clean, dry, 250-ml beaker covered with a watch glass. Add about 0.8-1.2 g of alum hydrate into the beaker, and reweigh accurately. 2. Support the beaker and watchglass on a ring stand using a wire gauze (Figure 1). Heat the hydrate...
If an unknown hydrate, AC XH20, has a mass of 1.555 g before heating, and a mass of 0.994 g after heating, what is the experimental percentage of water in the hydrate? f the anhydrous compound (AC) in the preceding problem has a molar mass of 160 g/mol, hat are the water of crystallization (X) and formula for the hydrate?
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