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Chemical Analysis
Page 2
Questions (143)
When 6.853 mg of a sex hormone was burned in a combustion
analysis, 19.73 mg of CO2 and 6.391 mg of H2O were obtained. What is
1 answer
asked by
asasdfsdfsdf
87 views
An unknown solution may contain some of the cations listed below. One student preformed a series of experiments to determine
1 answer
asked by
Joey
609 views
determine the amount of NAOH dissolved in 250ml. of the solution by titrating it against N/10 H2SO4
1 answer
asked by
ujjwal
379 views
How do i do this question??
A 10.00ml Sample was taken from a 2Liter Container of Tropicana Orange juice. This sample was
2 answers
asked by
Ellen
582 views
How can I verify concentration of Hydrofluoric Acid (Known Concentration)
3 answers
asked by
Hanif
466 views
Why is methyl orange indicator used instead of phenolpthalein when determing calcium content in a chalk by back titration
2 answers
asked by
Kester
702 views
Determine the concentration of iron in an aqueous solution containing 0.2810 grams of Fe(NH4)2(SO4)2 per liter of solution.
4 answers
asked by
jenine
613 views
A standard solution with a FeSCN2+ concentration of 1.55x10^-4M has a percent transmittance (%T) of 18.8%. Another solution of
1 answer
asked by
Dan
452 views
a sample of soil containing hydrated barium chloride potassium chloride plus inert material weighd 0.8076g. tha sample was then
1 answer
asked by
shanice
451 views
Devise a test to distinguish between Cu2+ and Co2+.
1 answer
asked by
Grace
356 views
The concentration of dissolved chlorine in tap water can be determined by adding excess potassium iodide and then using aqueous
4 answers
asked by
Maame
867 views
a watch glass and filter paper weighing 41.060g was used to collect the CuSCN precipitate in this experiment. After drying, the
3 answers
asked by
help!
1,398 views
determine the concentrated of mohrs salt solution with the help of supplied n/10 kmno4 solution preparred?
1 answer
asked by
rohit
386 views
A 2.5 gram sample of a hydrocarbon containing C, H, N, O is combusted in excess oxygen. The nitrogen compounds that are formed
4 answers
asked by
Kim
542 views
Can we use an ACS/AR grade chemical for UV spectrophotometric analysis?
Or is it a must to use a chemical that is specially
1 answer
asked by
candy
422 views
Can we use an AR grade chemical for UV spectrophotometric analysis?
Or is it a must to use a chemical that is specially
3 answers
asked by
candy
406 views
how cam the amount of chlorine in [Ni(NH3)6]Cl2 be determined
2 answers
asked by
ranger
456 views
the clinitest tablets specifically test for which of the following:
starch, hydrogen peroxided, guaicol, peroxidase, or none of
2 answers
asked by
Anonymous
1,077 views
The EPa detection limit for phosphate in water samples is 0.0450 milligrams per liter. Can phosphate be detected if 55.0
1 answer
asked by
Tyler
408 views
I have a water sample that contains 0.50 mg/l (or ppm) of phosphate.
We know that phosphate is a component of Total Phosphorous.
5 answers
asked by
Mary
443 views
Ok this is what i got for the grams part now....
Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 =
6 answers
asked by
LT
587 views
My chem class just finished a lab in which the objective was to find the percentage of silver and barium in a nitrate salt
7 answers
asked by
Catie
751 views
Predict the effect (Increase, Decrease, No effect, Indeterminate)and explain why
1. Condition: In the determination of water
3 answers
asked by
:kkk:
528 views
I need some help with some of these questions:
The action of bacteria on meat and fish produces a poisonous compound called
3 answers
asked by
Matthew
1,637 views
An aspirin tablet weighing 0.502 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved
the
3 answers
asked by
John
1,529 views
Combustion analysis of 0.300 g of an unknown compound containing carbon, hydrogen, and oxygen produced 0.5213 g of CO2 and
4 answers
asked by
Selena
1,513 views
Carry out a quantitative analysis of Aluminum tetraoxosulphate(vi)-(So4)3
1 answer
asked anonymously
84 views
An analysis for copper was performed on two pure solids. One solid was found to contain 43.0% copper; the other contained 32.0%
3 answers
asked by
Anonymous
1,249 views
An analysis of generic antacid tablets labeled to contain 250mg of CaCO3 (MM= 100.09g/mol) per tablet of active ingredient was
2 answers
asked by
Marina
1,242 views
Suppose you are studying coordination compounds of Co(II) with the ligand pyridine (py, C5H5N, MW = 79.10). You isolate a
1 answer
asked by
Olivia
1,173 views
i have to write lab report based on my determination of chemical formula & in lab we did experiment & found out the formula was
2 answers
asked by
Niki
1,083 views
Combustion analysis of 0.284 g of a compound containing C, H, and O produces 0.623 g of CO2 and 0.340 g of H2O. Mass spectral
2 answers
asked by
Darali
1,080 views
Analysis of a compound indicates that it is 49.02% carbon, 2.743% hydrogen, and 48.23% chlorine by mass. A solution is prepared
4 answers
asked by
Tracy
1,059 views
Thanks for your help; I am still have a few problems, could you check my work:
Given: Volume of vinegar analyzed-5mL Con'c of
1 answer
asked by
Adam
970 views
Cobalt(II) chloride is commonly obtained from chemical supply houses as a hydrate with the
formula CoCl2 • 6 H2O. An analysis
4 answers
asked by
Destiny
910 views
A student weighed a sample of KHP and found it weighed 0.9803g. The titration of this KHP required 23.45 mL of base (NaOH).
1 answer
asked by
Kandace
915 views
in an experiment a sample of hydrocarbon was analyzed. The sample contained6 g of carbon and 1.344 g Hydrogen.
a) whats the
3 answers
asked by
hilde
908 views
The chemical method of analysis in determination of the blood alcohol content %BAC is:
K2Cr2O7 + H2SO4 + C2H5OH ---> Cr2(SO4)3 +
1 answer
asked by
nick
880 views
An organic compound consists of only carbon, hydrogen, and oxygen. Through combustion analysis, 5.671g of water and 36.933g of
4 answers
asked by
Sara
861 views
Tungsten trioxide (WO3) has a rich yellow color and is often used as a pigment in ceramics and paints. In order to test a
1 answer
asked by
Jessica
866 views
Devise a test to distinguish between Cu2+ and Co2+.
2 answers
asked by
Bella
824 views
What could be the effects of carbonate error on the calculated values for the standardization and the sample analysis?
What could
1 answer
asked by
Chin
785 views
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−6 atomic percent. Assuming that the
5 answers
asked by
lisa
792 views
The sulfate in a 0.2345 g sample of a mixture containing only K2SO4 (fm = 174.26) and Na2SO4 (fm = 142.04) is to beanalyzed by
3 answers
asked by
Esraa
805 views
Hi I need help doing this question! Thank you in advance!
Suppose that a mixture contains 1,4-dimethoxybenzene and benzoic acid.
1 answer
asked by
Mandy
451 views
Elemental analysis of a compound, once used as a pesticide, was found to be 74.2% carbon, 8.64% hydrogen, and 17.2% nitrogen.
2 answers
asked by
Kim
773 views
calculate the molar concentration of H3PO4 in the cola sample.
Volume of decarbonated cola used 25.00mL, Molarity of NaOH used
2 answers
asked by
Anonymous
735 views
How can you distinguish chemically between the following pairs of substances in one or two steps.
a)HCl and H2SO4 b) KNO3 and
2 answers
asked by
Anonymous
680 views
3.297 g of a substance (containing only C, H, and O) is burned in a combustion analysis apparatus.
The mass of CO2 produced is
2 answers
asked by
Sebastian
654 views
Chemical analysis of a germanium crystal reveals indium at a level of 0.0003091 atomic percent. Assuming that the concentration
7 answers
asked by
selly
656 views
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Parent Categories (4)
Analytical Chemistry
Chemistry
Coordination compounds
Organic Chemistry