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4. A student worked with a sample of ZnSO4.7H2O. a. How many atoms of each kind...
3. What is the mole ratio of salt to water for the following compounds? Hydrate Salt Water CaCl2 - 2 H20 FeSO4 · 7...
3. What is the mole ratio of salt to water for the following compounds? Hydrate Salt Water CaCl2 - 2 H20 FeSO4 · 7 H20 Na2S2O3 - 5 H20 Ba(OH)2 8 H20 MnSO4 H2O 4. A student worked with a sample of ZnSO4.7H2O. a. How many atoms of each element are present? b. What is the stoichiometric ratio of salt to water? c. Calculate the percent of water in the hydrate. Show your work.
Post-Lab Questions 1. A student was in a hurry and decided to take a shortcut in...
Post-Lab Questions 1. A student was in a hurry and decided to take a shortcut in the Procedure. After washing and drying the crucible with towels, the student did not do steps 2, 3, and 4 in the Procedure, but immediately went to step 5 and continued from there. What is the error that will be introduc into the experiment? 2. If your sample contained a volatile impurity, what value would be in error, the mass of the anhydrous salt...
chemistry
A student was in a hurry and decided to take a shortcut in the Procedure. After washing and drying the crucible with towels, the student did not do steps 2, 3, and 4 in the Procedure, but immediately went to step 5 and continued from there. What is the error that will be introduc into the experiment? 2. If your sample contained a volatile impurity, what value would be in error, the mass of the anhydrous salt or the mass...
4. A student was given a sample of MgSO4.7H20 and asked to determine the % water...
4. A student was given a sample of MgSO4.7H20 and asked to determine the % water of hydration by a procedure similar to the one which you used. The following data were obtained. Using this data complete the table showing the calculations for the % water in the hydrate. Mass of crucible and hydrate (before heating) 28.45 g 25.40 g Mass of beaker Mass of hydrate Mass of beaker and anhydrous salt (after heating) 27.16 g Mass of water lost...
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...
1. After a 6.387 g sample of impure SnCl4.2H2O (Mn=296.7 g/mol) was throughly heated, 5.690 g remained b) How many g...
1. After a 6.387 g sample of impure SnCl4.2H2O
(Mn=296.7 g/mol) was throughly heated, 5.690 g remained
b) How many grams of the hydrate were present in the
sample?
c) What is the % m/m of the hydrate in the sample?
02 IR 4. After a 6.387 g sample of impure Snc.4.2H20 (Mm = 296.7 g/mol) was thoroughly heated, 5.690 g remained a) How many grams of water were present in the sample? SHOW WORK (3 pts) 5.692 g H2O...
A student is given a sample of a calcium sulfate hydrate. He places the sample in...
A student is given a sample of a calcium sulfate hydrate. He places the sample in a dry, covered crucible and weighs it. The total mass (crucible, cover, and hydrate) is 19.39219.392 g. The crucible and cover together had previously weighed 17.98717.987 g. He then heats the crucible to redness for 10 minutes with the cover slightly ajar. After the crucible cools, he weighs the crucible and its contents; the mass is now 19.09819.098 g, due to the loss of...
Please provide correct work & answers to the following, thank you!! .A student observed that when heated his...
Please provide correct work & answers to the following, thank
you!!
.A student observed that when heated his sample produced condensation on the upper walls of his test tube and changed color. When the sample was added to water it produce a solution with a color very similar to that of the original salt. Explain these observations 2. A student gets a measurement of 30.112 grams when he weighs a dry empty crucible and cover. He then adds an unknown...
1) Sample of nitrogen gas, N2 weighs 15.3 g. How many molecules N2 and how many...
1) Sample of nitrogen gas, N2 weighs 15.3 g. How many molecules N2 and how many atoms of N are present in this sample? 1a)A mixture of sand and salt is found to be 57 percent NaCl by mass. How many moles of NaCl are in 47 g of this mixture? 1b) What is the mass of 4.6*10^23 of ammonia? 1c) A water solution of sulfuric acid has a density of 1.67 g/mL and is 65 percent H2SO4 by mass....
A student heated a sample of a hydrated salt and obtained the following data: Grams of...
A student heated a sample of a hydrated salt and obtained the following data: Grams of hydrated salt used: 1.0000 gram Grams of anhydrous salt (147 g/mole) recovered: 0.8033 grams Grams of water vapour (18 g/mole) lost: 0.1967 grams Determine the percentage by mass of water in this hydrate. (1) How many water molecules, "X", are bonded to this hydrated salt, salt. X H20? (2)
3. What is the mole ratio of salt to water for the following compounds? Hydrate Salt Water CaCl2 - 2 H20 FeSO4 · 7 H20 Na2S2O3 - 5 H20 Ba(OH)2 8 H20 MnSO4 H2O 4. A student worked with a sample of ZnSO4.7H2O. a. How many atoms of each element are present? b. What is the stoichiometric ratio of salt to water? c. Calculate the percent of water in the hydrate. Show your work.
Post-Lab Questions 1. A student was in a hurry and decided to take a shortcut in the Procedure. After washing and drying the crucible with towels, the student did not do steps 2, 3, and 4 in the Procedure, but immediately went to step 5 and continued from there. What is the error that will be introduc into the experiment? 2. If your sample contained a volatile impurity, what value would be in error, the mass of the anhydrous salt...
4. A student was given a sample of MgSO4.7H20 and asked to determine the % water of hydration by a procedure similar to the one which you used. The following data were obtained. Using this data complete the table showing the calculations for the % water in the hydrate. Mass of crucible and hydrate (before heating) 28.45 g 25.40 g Mass of beaker Mass of hydrate Mass of beaker and anhydrous salt (after heating) 27.16 g Mass of water lost...
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...
1. After a 6.387 g sample of impure SnCl4.2H2O
(Mn=296.7 g/mol) was throughly heated, 5.690 g remained
b) How many grams of the hydrate were present in the
sample?
c) What is the % m/m of the hydrate in the sample?
02 IR 4. After a 6.387 g sample of impure Snc.4.2H20 (Mm = 296.7 g/mol) was thoroughly heated, 5.690 g remained a) How many grams of water were present in the sample? SHOW WORK (3 pts) 5.692 g H2O...
Please provide correct work & answers to the following, thank
you!!
.A student observed that when heated his sample produced condensation on the upper walls of his test tube and changed color. When the sample was added to water it produce a solution with a color very similar to that of the original salt. Explain these observations 2. A student gets a measurement of 30.112 grams when he weighs a dry empty crucible and cover. He then adds an unknown...
A student heated a sample of a hydrated salt and obtained the following data: Grams of hydrated salt used: 1.0000 gram Grams of anhydrous salt (147 g/mole) recovered: 0.8033 grams Grams of water vapour (18 g/mole) lost: 0.1967 grams Determine the percentage by mass of water in this hydrate. (1) How many water molecules, "X", are bonded to this hydrated salt, salt. X H20? (2)
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