Homework Answers
Add Answer to:
Salt Water Hydrate Na2SO4·10H20 Co(NO3)2-6H20 Mo(NO3)2-5H20 CaSO4-2H20 (CaSO4)2.H20
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...
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...
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.
CuSO4• 5H20 -------> Custy + D u 2) What is the color for anhydrous salt of copper (II) sulfate (CuSO4)? What is...
CuSO4• 5H20 -------> Custy + D u 2) What is the color for anhydrous salt of copper (II) sulfate (CuSO4)? What is the color for ionic hydrate compound of copper (II) sulfate pentahydrate (CuSO4.5H2O)? 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 of a 1.00 M CuSO4 solution? 5) Suppose you used the Procedure in this experiment to...
1. Define the following terms. a. Water of hydration b. Hygroscopic substance 2. Which of the...
1. Define the following terms. a. Water of hydration b. Hygroscopic substance 2. Which of the following is NOT a hydrate? a. NISO4 . 6H20 b. MgSO4. 7 H2O c. NaCl d. Na2CO3. H20 is 3. A substance that loses water spontaneously to the atmosphere when left an anhydrous compound b. a hydrate c. efflorescent open a. d. Hygroscopic e. Deliquescent Give the correct name for the followings. 4. a. MgSO4. 7H;O b. CaCl2. 2H20 c. FeCla.6H20
Experiment 3: Determination of Percent Water in a Hydrate Data Sheet Run #1 Run #2 _37.032...
Experiment 3: Determination of Percent Water in a Hydrate Data Sheet Run #1 Run #2 _37.032 g Mass of crucible and cover 38.067 g Mass of crucible, cover and hydrate Mass of hydrate taken for 2-1- analysis 38.Ona _37.713 g Mass of crucible, cover and residue (after heating) _8 - Mass of H20 lost 6. _(FW=18.015 g/mol) mol Moles of H20 lost 13 3521 % % Percent of H20 lost .8 Mass of residue (anhydrous salt) mol Moles of anhydrous...
40 UNKNOWN NUMBER Data Trial 2 Trial 1 ২৪.6209 30.744g 30.330j 30.398 2&.256g Mass of the crucible and cover &...
40 UNKNOWN NUMBER Data Trial 2 Trial 1 ২৪.6209 30.744g 30.330j 30.398 2&.256g Mass of the crucible and cover &&.4369 Mass of crucible, cover and sample 7989 Mass of crucible, cover and salt after first heating Mass of crucible, cover and salt after second heating &.99 Mass of crucible, cover and salt after third heating Calculations CaSOu CesOy Chemical formula of anhydrous salt (given) 2.1149 1. 6989 9-689 Mass of hydrate (sample) Mass of anhydrous salt 04169 Mass of water...
4o UNKNOWN NUMBER Data Trial 2 Trial 1 ২৪.6.209 30.2449 30.3309 30 398 Mass of the crucible and cover &&.4...
4o UNKNOWN NUMBER Data Trial 2 Trial 1 ২৪.6.209 30.2449 30.3309 30 398 Mass of the crucible and cover &&.4369 Mass of crucible, cover and sample 7989 Mass of crucible, cover and salt after first heating Mass of crucible, cover and salt after second heating &.99 Mass of crucible, cover and salt after third heating Calculations CaSOu CesOy Chemical formula of anhydrous salt (given) 21149 1.6989 9-689 Mass of hydrate (sample) Mass of anhydrous salt 04169 Mass of water liberated...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
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...
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.
CuSO4• 5H20 -------> Custy + D u 2) What is the color for anhydrous salt of copper (II) sulfate (CuSO4)? What is the color for ionic hydrate compound of copper (II) sulfate pentahydrate (CuSO4.5H2O)? 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 of a 1.00 M CuSO4 solution? 5) Suppose you used the Procedure in this experiment to...
1. Define the following terms. a. Water of hydration b. Hygroscopic substance 2. Which of the following is NOT a hydrate? a. NISO4 . 6H20 b. MgSO4. 7 H2O c. NaCl d. Na2CO3. H20 is 3. A substance that loses water spontaneously to the atmosphere when left an anhydrous compound b. a hydrate c. efflorescent open a. d. Hygroscopic e. Deliquescent Give the correct name for the followings. 4. a. MgSO4. 7H;O b. CaCl2. 2H20 c. FeCla.6H20
Experiment 3: Determination of Percent Water in a Hydrate Data Sheet Run #1 Run #2 _37.032 g Mass of crucible and cover 38.067 g Mass of crucible, cover and hydrate Mass of hydrate taken for 2-1- analysis 38.Ona _37.713 g Mass of crucible, cover and residue (after heating) _8 - Mass of H20 lost 6. _(FW=18.015 g/mol) mol Moles of H20 lost 13 3521 % % Percent of H20 lost .8 Mass of residue (anhydrous salt) mol Moles of anhydrous...
40 UNKNOWN NUMBER Data Trial 2 Trial 1 ২৪.6209 30.744g 30.330j 30.398 2&.256g Mass of the crucible and cover &&.4369 Mass of crucible, cover and sample 7989 Mass of crucible, cover and salt after first heating Mass of crucible, cover and salt after second heating &.99 Mass of crucible, cover and salt after third heating Calculations CaSOu CesOy Chemical formula of anhydrous salt (given) 2.1149 1. 6989 9-689 Mass of hydrate (sample) Mass of anhydrous salt 04169 Mass of water...
4o UNKNOWN NUMBER Data Trial 2 Trial 1 ২৪.6.209 30.2449 30.3309 30 398 Mass of the crucible and cover &&.4369 Mass of crucible, cover and sample 7989 Mass of crucible, cover and salt after first heating Mass of crucible, cover and salt after second heating &.99 Mass of crucible, cover and salt after third heating Calculations CaSOu CesOy Chemical formula of anhydrous salt (given) 21149 1.6989 9-689 Mass of hydrate (sample) Mass of anhydrous salt 04169 Mass of water liberated...
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) 1) One mole of any substance contains Avogadro's number of particles of that substance. What is the numerical value of Avogadro's number? A) 12.01 23 Avagrans t Male aton 6022 x1o atums B) 6.022 x 1023 C) 6.022 x 10-23 D) 1.661 x10-24 E) 1.00 x10-14 2) What is the mass of 4.00 moles of helium, the gas commonly used to fill...
Most questions answered within 3 hours.
-
BaS crystallizes in a cubic unit cell with S2- ions on each
corner and each face....
asked 27 minutes ago -
A. 0≤P(Oi)≤10≤P(Oi)≤1 for each i
B. P(Oi)≤0P(Oi)≤0
C. P(Oi)=1+P(OCi)P(Oi)=1+P(OiC)
D. P(Oi)≥1P(Oi)≥1
If an experiment consists of...
asked 2 hours ago -
A battery has an emf of 9.20V and an internal resistance of 1.20
ohm. a)What resistance...
asked 1 hour ago -
The area of an elastic circular loop decreases at a constant
rate, dA/dt = −6.60×10−3 m2/s...
asked 3 hours ago -
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 4 hours ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 4 hours ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 4 hours ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 4 hours ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 4 hours ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 5 hours ago -
Given the information in the table, which of the following
statements is CORRECT?
Stock A
Stock...
asked 5 hours ago -
Write MARIE assembly language programs that do the following:
Write a program that inputs an integer...
asked 5 hours ago