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Empirical and Molecular Formulas
Page 2
Questions (101)
A certain compound contains carbon, hydrogen , and oxygen. When 1.00 grams of this compound are burned in oxygen gas 1.47 grams
2 answers
asked by
Patrick
1,150 views
An unknown compound has a formula of CxHyOz. You burn 0.1523 g of the compound and isolate 0.3718 g of CO2, and 0.1522 g of H2O.
3 answers
asked by
Jashmid
1,046 views
Please check my answers for the following questions. THANK YOU.
1) The empirical formula of a compound that is 25.9% nitrogen and
3 answers
asked by
anonymous
2,182 views
A 7.85 g sample of a compound with the empirical formula C5H4 is dissolved in 301 g of benzene. The freezing point of the
3 answers
asked by
niki
1,990 views
Benzene has the empirical formula CH and an experimental molar mass of 78 g/mol. What is its molecular formula? Explain how you
5 answers
asked by
Brittney
1,876 views
a compound has an empirical formula CH20 and molecular mass of 90 determine it's molecular formula(H=11; C=12; 0=16)
3 answers
asked by
chidinma
1,679 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
A compound which contains only carbon, hydrogen, and sulfur is burned in oxygen under such conditions that the individual
4 answers
asked by
Anonymous
1,628 views
Maleic acid is an organic compound composed of 41.39% C, 3.47% H, and the rest oxygen. If 0.271 mol of maleic acid has a mass of
3 answers
asked by
Anonymous
1,555 views
An unknown organic compound is 40.00% C, 6.67% H and 53.33% O by mass. The formula weight of the unknown is 90.0g/mole. Find the
3 answers
asked by
Chelsea
1,423 views
mass of mg- .28
mass of o- .41 calculate the moles of mg and o what is the simples whole number ratio of the moles of mg to the
3 answers
asked by
ashley
1,367 views
A 8.408 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 12.53 grams of CO2 and
4 answers
asked by
ALAN
1,130 views
A 25g sample of a compound composed of Carbon, Hydrogen, and Oxygen was combusted. 55grams of Carbon Dioxide and 30 grams of
3 answers
asked by
Olga
1,104 views
a compound with the molecular weight of 276 grams was determined to be 39.10% carbon, 8.77% hydrogen, and 52.13% oxygen. what is
2 answers
asked by
shelly
979 views
Compound K is a hydrocarbon. Combustion of 6.51 g of K gave 20.47 g of carbon dioxide and 8.36 g of water. The relative
2 answers
asked by
Anonymous
986 views
A compound is 54.52% C, 9.15% H, and 36.32% O by mass. What is the empirical formula?
The molecular mass of the compound is 132
2 answers
asked by
Jerry
886 views
If the empirical formula of a compound is CH2 and its molar mass is 70.0, then what is its molecular formula?
2 answers
asked by
Zayn
1,022 views
Citric acid, the compound responsible for the sour taste of lemons, has the following elemental composition: C, 37.51%; H,
3 answers
asked by
Sara
896 views
A 185.325 g sample of a compound of carbon, nitrgoen and hydrogen is burned completely. Calculate the empirical formula if 225.0
2 answers
asked by
Louis
878 views
A 12.0g sample of carbohydrate contain 4.50g of carbon, 3.25g of oxygen, and some hydrogen. Determine the percent by mass of
2 answers
asked by
jhong
866 views
Hi Im reposting incase my original post doesn't get read. Please see bottom for additional info that I need help getting
3 answers
asked by
Helpme
865 views
I need some help with some of these questions:
The action of bacteria on meat and fish produces a poisonous compound called
1 answer
asked by
Matthew
861 views
If you divide the molar mass of a compound by the empirical formula mass, what is the result?
That division should be VERY close
2 answers
asked by
Chris
878 views
'Imagine there is a tank of unknown gas that contains 53.31% carbon, 11.18% hydrogen, and 35.51% oxygen by mass. At 35.0 °C and
1 answer
asked by
samuel
859 views
When 3.517 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 11.59 grams of CO2 and 3.164 grams of
5 answers
asked by
jillian
838 views
analysis of a sample of an organic compound showed it to containd 39.9% of carbon,6.9% of hydrogen and 53.2% of
4 answers
asked by
Ayuba
838 views
A compound which contains hydrogen, oxygen, carbon only has molar mass of about 85 g/mol. When 0.43 g of the compound is burned
2 answers
asked by
Clive Lodnyx
776 views
Maleic acid is an organic compound composed of 41.39% C, 3.47% H, and the rest oxygen. If 0.250 mol of maleic acid has a mass of
3 answers
asked by
casi
704 views
Calculate the empirical formula and molecular formula of a compound that contains only carbon, oxygen and hydrogen and has a
2 answers
asked by
Anonymous
690 views
0.717 g of a compound containing carbon, hydrogen, and oxygen is burned and found to produce 1.02 g CO2 and 0.624 g H2O. The
4 answers
asked by
Franklin
656 views
Derive the empirical formula of a hydrocarbon that on analysis gave the following percentage by mass composition: C = 85.63 %
2 answers
asked by
Hanin
629 views
an unknown compound is known to contain 30.34%N and 60.56%O and has a molar mass of 92.00g. what are the empirical formula and
3 answers
asked by
Bill
584 views
lactic acid is the avid responsible for the sour test in spit milk. on the basis of combustion analysis, it's percentage
2 answers
asked by
amy
612 views
A compound has the empirical formula CHCL .A flask with volume 253 cm3 at temperature of 373K and pressure of 1.0 atm contains
2 answers
asked by
Amy
579 views
Naphthalene, commonly found in mothballs , is commonly found in 93.7% carbon and 6.3% hydrogen. The molar mass of naphthalene is
2 answers
asked by
Alya
556 views
A hydrogen has an empirical formula CH and a vapour density of 39.Determine its molecular formula,show workings.
2 answers
asked by
Adeola
553 views
A compound containing only C, H, and N yields the following data.
(i) Complete combustion of 34.8 mg of the compound produced
2 answers
asked by
Darrel
551 views
For Peroxyacyl nitrate (PAN)
A compound of C,H,N,O Determine the empirical formula from the percent composition by mass: 19.8% C,
2 answers
asked by
Amy~
575 views
I don't understand where to start first. Can you break it down for me?
Ascorbic acid, also known as vitamin C, has a percentage
3 answers
asked by
GABS
542 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
534 views
A compound is composed of 19.998% carbon, 3.331% hydrogen, 23.320% nitrogen, and 53.302% Oxygen. Its molar is 120.07 gram/mole.
2 answers
asked by
regina
515 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
Determine the empirical and molecular formula for chrysotile asbestos.
Chrysotile has the following percent composition: 28.03%
1 answer
asked anonymously
27 views
A compound consists of carbon, hydrogen, and fluoride. In one experiment, combustion of 2.50g of the compound produced 3.926 g
2 answers
asked by
Karma
472 views
A compound has the empiical fomula CHCl. a 256-mL flask, at 373 K and 750. Torr, contains 0.800 g of the gaseous compound. Give
1 answer
asked by
Anonymous
465 views
a certain hydrocarbon has the analysis C=85.84% and H=14.16%. the density of its vapour is 2.50g/L at STP. find the empirical
1 answer
asked by
trinaa
452 views
An analysis of a compound gave 40% carbon 3.7% hydrogen. the vapour density of the compound is 30. calculate the empirical and
1 answer
asked by
NEMUEL
441 views
can a compound's empirical and molecular formulas be the same?Explain
who cares? Yes, they can. CH4 is methane. That is the
1 answer
asked by
amanda
459 views
borane has the em pirical formula BH3 and a molecular mass of 28 amu. What
is its molecular formula?
1 answer
asked anonymously
11 views
The percentage composition of acetic acid is found to be 39.9% C, 6.7% H, and
53.4% O and its molecular mass was determined by
1 answer
asked anonymously
43 views
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Parent Categories (19)
Chemical Analysis
Chemical calculations
Chemical Composition
Chemical composition and formulas
Chemical Compounds
Chemical Formulas
Chemical Formulas and Composition
Chemical Formulas and Compounds
Chemical Formulas and Equations
Chemical Formulas and Reactions
Chemical Reactions
Chemistry
Compound Formulas
Compounds
Formulas
Formulas and Equations
Organic Chemistry
Stoichiometry
Stoichiometry/Chemical Reactions