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Chemical Analysis
Page 3
Questions (143)
Suppose that a 0.6123-g unknown chloride-containing sample was dissolved, and and AgCl precipitated by adding a AgNO3 solution.
3 answers
asked by
Anonymous
639 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−8 atomic percent. Assuming that the
4 answers
asked by
sofia
595 views
See bottom Patrick
A certain compound contains carbon, hydrogen , and oxygen. When 1.00 grams of this compound are burned in
2 answers
asked by
Patrick
637 views
An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from
2 answers
asked by
eve
620 views
An aspirin tablet weighing 0.548 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the
2 answers
asked by
jared
597 views
Is the flame coloration a test for the metal or for the acid radical?
2 answers
asked by
marie
566 views
An aspirin tablet weighing 0.475 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved
the
3 answers
asked by
CHEMCHEM
583 views
what tests can be run to identify the cation and anion of an ionic compound?
3 answers
asked by
Mm
584 views
I titrated 0.25g of soda ash mixed with 25mL of deionized water and it took 43.7mL of hydrochloric acid to complete the
5 answers
asked by
Zach
575 views
last one, i PROMISE
A compound containing only C, H, O and Cr was subjected to combustion analysis. A sample of 10.88 mg produced
4 answers
asked by
confused student..
570 views
chemical analysis shows that citric acid contains 37.51% C, 420% H, and 58.29% O. What is the empirical formula for citric acid?
2 answers
asked by
john
524 views
A student recorded the following data for copper sulfate pentahydrate.
Weight of crucible and cover (after heating to constant
6 answers
asked by
Anonymous
549 views
After removing a crucible (containing CaCO3 obtained as a precipitate) from an oven, what could you do (if you were being
2 answers
asked by
Jason
517 views
"The analyzer said that at 20degreesC the unknown gas was 82.8% carbon by weight and 17.2% hydrogen. The analyzer also diffused
2 answers
asked by
Anonymous
543 views
Fish-liver oil is a good source of Vitamin A. When 0.1232 g of fish liver oil is dissolved in 500. mL of solvent, an absorbance
3 answers
asked by
David
541 views
a domestic cleaner contains concentrated hydrochloric acid as the active ingredient.
a titration experiment was carried out to
2 answers
asked by
Darth Chan
536 views
You want to measure the oxalic acid contents in 20 ml of a solution. To this end, you add 100 mmol sodium dichromate to the
2 answers
asked by
Anonymous
529 views
Experiment on Titration of Acids and Bases
Suppose some deionized water was left in the buret before it was filled with the
2 answers
asked by
Jerome
530 views
An unknown sample with a molecular mass of 180.0g is analyzed to yield 40% C, 6.7% H, and 53.3% O. What is the empirical formula
3 answers
asked by
z
533 views
I'm trying to do a lab, and I need to find the concentration of FeSCN+2 in five solutions based the calibration curve and the
2 answers
asked by
Felliax
521 views
A compound on analysis as 87:8% c,12:2%h determine its empirical formular&molecular formular given mass=56gmol
2 answers
asked by
Samuel
522 views
A 0.02718 mg sample of an unknown compound was found to contain 0.0094 mg of Fe, and 0.0178 mg of Cl. It was also determined
2 answers
asked by
anonymous
536 views
Weight of the Rock Salt Sample: .343 (g)
Weight of the Rock Salt Solution: 9.910 (g) Trial #1 Trial #2 Trial #3 Weight of Rock
1 answer
asked by
Selena
511 views
how do I figure out the molecular formula for The concentration of lead (II) ions in a sample of polluted water that also
2 answers
asked by
cindy
513 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−8 atomic percent. Assuming that the
5 answers
asked by
anita
502 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091X10^-2 atomic percent. Assuming that the concentration
18 answers
asked by
Odesa
509 views
How much mg of iron are there in 100g of spinach.
if we burned 5.20g of spinach and added 10 ml of 2.0 M HCl into the spinach
2 answers
asked by
Jason
489 views
You have isolated compound X from panda pancreas. You started with a whole pancreas, and finished up with 5 ml of a pure
3 answers
asked by
Student
480 views
a sample of a compound with a mass of 0.4168g is extracted from a plant. Decompostion of this sample produces 0.1667g of carbon,
2 answers
asked by
Cali
500 views
problem 3.
A compound Y containing carbon,hydrogen and oxygen was burned in a stream of oxygen,the carbondioxide and water were
3 answers
asked by
yankoua
495 views
A gas containing sulfur and fluorine analyzed as 29 % sulfur. A 140 g sample of a gas occupied a volume of 50.1 L with a
2 answers
asked by
Jane
477 views
what's the discussion for determine BaCl2.2H2O in lab report
1 answer
asked by
tan
457 views
Chemical analysis of a germanium crystal reveals indium at a level of 0.0003091 atomic percent. Assuming that the concentration
1 answer
asked by
adex
470 views
What should be observed during titration?
My answer: We observe the change in color and change in turbidity of the sol'n. Am I
1 answer
asked by
Shay
438 views
compund containing only C, H, and N yeilds the following data-
1. complete combustion of 34.3 mg of the compund producedmg of CO2
1 answer
asked by
mel
444 views
Barium sulfate (MW= 233.38 g/mole) precipitated from a 1.300 g sample was contaminated with 9.4 mg of Fe2(SO4)3 (MW = 399.98
1 answer
asked by
Anonymous
498 views
unknown used 5.034g, freezing point of unknown liquid solution -3.0 degrees celsius for trial 1 and -2.5 degrees celsius for
1 answer
asked anonymously
21 views
barry um has a sample of a compound which weighs 200g and contains carbon,hydrogen,oxygen and nitrogen. by analysis, he find
1 answer
asked anonymously
30 views
When testing for starch, protein,fat and sugar in a mixture of protein and sugar what are the results in colour
1 answer
asked anonymously
15 views
Calculate the molecular weight, wt.% element in a crust and wt.% oxide in a crust for the given information below.
SiO2 Show all
1 answer
asked anonymously
11 views
The %Fe( Mr=55.845g/mol) in a vitamin tablet was determined by dissolving the tablet ( mass=0.1512g) in water. The solution was
1 answer
asked anonymously
11 views
determine the theoretical % composition of water in bluestone
1 answer
asked anonymously
2 views
How to determine the density of an unknown solution
1 answer
asked by
Alicia
8 views
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Parent Categories (4)
Analytical Chemistry
Chemistry
Coordination compounds
Organic Chemistry