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Molecular Formulas
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Questions (77)
In an effusion 15 ml of HBr effused in 1.0 min. In the same apparatus under the same conditions, 20.3 ml of an unknown gas
1 answer
asked by
Anonymous
755 views
The empirical formula of a compound is CH2O and the molecular mass is 180. What is the molecular formula of the compound?
2 answers
asked by
Haley
726 views
When 1 gram of sex hormone (contains C, H, and O) was burned in a combustion analysis, 1.5 grams of CO2 and 0.405 grams of H2O
4 answers
asked by
IVY
746 views
A 1.325 g sample of an unknown vapor occupies 386 mL at 114 celsius and 946 mmHg. The simplest formula of the compound is NO2.
2 answers
asked by
lavonne
668 views
At 22 degrees Celsius and a pressure of 755 mm Hg, an unknown gas was found to have a density of 4.52 g/L. When analyzed, the
2 answers
asked by
tom
650 views
a compound is found to be 94.1% o and 5.90% h. its molecular mass is 34.0. what is its molecular formula
A. H3O2 B. OH C. H2O D.
2 answers
asked by
drew
608 views
CxHyCz compound weighs 132 amu, what is the molecular formula?
2 answers
asked by
christina
553 views
The density of a gas containing chlorine and oxygen has a density of 2.875 g/L at 754.5 mm Hg and 11(degress C). What is the
2 answers
asked by
Toni Jones
565 views
I did the question but I need help is this right? Thanks
How many atoms of chlorine are in 19.0 grams of MgCl2? 24.3 + 2(35.5) =
3 answers
asked by
Shine Bright Shine Far
548 views
A compound is made up of two elementsA and B,has A=70%,B=30%.The relative number of moles of Aand B in the compound are 1.25 and
2 answers
asked by
Arunvenukumar
553 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
A 0.01020 mg sample of an unknown compound was found to contain 0.0084 mg of C, and 0.0018 mg of H. It was also determined that
2 answers
asked by
HELP
523 views
why is the molecular formula of oide of arsenic in its gaseous state is not neccessarialy the same as its empirical formula
what
1 answer
asked by
donald
512 views
The mass of one molecule of the compound is 2.53 x 10^-22.Determine the molecular formula for methyl salicylate.
emprical formula
1 answer
asked by
bella
438 views
2 Al(CO₂)₃ how many atoms have
1 answer
asked by
Marcos
16 views
70 g of a pure, hydrated magnesium sulphate crystals were dissolved in 90 g of water and mole fraction of solute in
the solution
1 answer
asked anonymously
44 views
70 g of a pure, hydrated magnesium sulphate crystals were dissolved in 90 g of water and mole fraction of solute in
the solution
1 answer
asked anonymously
44 views
An identified covalent molecular compound contains only carbon, hydrogen, and oxygen. When 6.60 mg of this compound is burned,
1 answer
asked anonymously
11 views
N2O 4 is a molecular formula
Responses True True False
1 answer
asked anonymously
11 views
Which of the following is a molecular formula?
Responses C2H6 C 2 H 6 AgNO3 AgNO 3 AlPO4 AlPO 4 NaHCO3
1 answer
asked anonymously
13 views
Which of the following is a molecular formula?
Responses CO N2O4 H2O CO2
1 answer
asked anonymously
9 views
Which of the following is a molecular formula?
Responses C2H4O2 CH2O CHO C3H9O
1 answer
asked anonymously
14 views
Which of the following is a molecular formula?
Responses AlPO4 AlPO 4 NaHCO3 NaHCO 3 C2H6 C 2 H 6 AgNO3
1 answer
asked anonymously
12 views
Which of the following is a molecular formula?
Responses N2O4 N 2 O 4 CO CO CO2 CO 2 H2O
1 answer
asked anonymously
9 views
Which of the following is a molecular formula?
Responses CHO CHO C3H9O C 3 H 9 O C2H4O2 C 2 H 4 O 2 CH2O
1 answer
asked anonymously
20 views
What is the molecular formula of a polymer of altrazine ( C8H14CIN5 ) a type of pesticide, using the molecular mass of 647.05
1 answer
asked anonymously
16 views
empircal formula of
C2H5N3O6
1 answer
asked anonymously
6 views
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Parent Categories (13)
Atom Composition
Chemical Analysis
Chemical Composition
Chemical Compounds
Chemical Formulas
Chemistry
Compounds
Formulas
Gaseous compounds
Gases
Hydrocarbons
Organic Chemistry
Stoichiometry