A sample of cyclohexane was analyzed and 9.0 grams of carbon and 1.5 grams of hydrogen were identified. Determine the molecular formula if the molecular mass is 84.0 g / mol.
C14H6
C12H6
C6H6
C6H12
Correct formula not shown
Determine the empirical formula for a compound containg: 36.5% sodium, 25.4% sulfur, and 38.1% oxygen. When writing the formula - write the symbols in the order given.
Na2SO3
Na2SO4
NaSO4
Na(SO4)2
Correct formula not shown
What is the empirical formula of a compound that contains 53.73% iron and 46.27% sulfur?
Fe2S3
Fe3S2
FeS1.5
FeS
Correct formula not shown
A sample of caffeine was analyzed where 49.5 grams of carbon, 5.20 grams of hydrogen, 28.9 grams of nitrogen and 16.5 grams of oxygen was identified. Determine the molecular formula if the molecular mass for caffeine is 194.0 g / mol
C2H5N2O
C6H15N2O2
C8H10N4O2
CHNO
Correct formula not shown
What is the empirical formula of a compound that contains 4.56 grams of sulfur and 16.30 grams of fluorine?
S6F
SF5
SF6
S2F12
Correct formula not shown
Determine the formula for a Hydrate that is 42.3% tin, 50.8% chlorine, and 32.2% H2O.
TeCl2 * 4 H2O
TiCl2 * 5 H2O
SbCl2 * 3 H2O
SnCl2 * 3 H2O
Correct formula not shown
Determine the formula for a Hydrate that is 11.96% Mg, 34.89% Chlorine, and 53.15% H2O.
MgCl2 * 3 H2O
MgCl2* 4 H2O
MgCl2 * 5 H2O
MgCl2 * 6 H2O
Correct formula not shown
A sample was analyzed that contained 20.0 grams of carbon, 3.33 grams of hydrogen, and 26.7 grams of oxygen was identified. Determine the molecular formula if the molecular mass is 180.0 g / mol.
C6H8O6
CH4O
C12H24O12
C6H12O6
Correct formula not shown
A sample was analyzed and the empirical formula was found to be CH3. Determine the molecular formula if the molecular mass is 30.0 g / mol.
CH3
C2H3
C2H6
C3H8
Correct formula not shown
A sample of Naphthaline was analyzed and the empirical formula was found to be C5H4. Determine the molecular formula if the molecular mass is 128.0 g / mol.
C8H10
C10H8
C5H4
C3H8
Correct formula not shown
One of the most commonly used white pigments in paint is a compound of titanium and oxygen that contains 59.9% titanium by mass. Determine the empirical formula of this compound.
Ti3O2
TiO2
TiO3
Ti4O6
Correct formula not shown
What is the empirical formula of a compound that contains 31.9 grams cobalt, 26.0 grams of carbon, 1.82 grams of hydrogen, and 40.3 grams of oxygen? When writing the formula - write the symbols in the order given.
Co(C6H5O7)2
Co3(C6H5O7)2
CoCHO
CoC4H3.3O4.67
What is the empirical formula of a lead oxide compound that contains 41.44 grams of lead, and 6.4 grams of oxygen?
PbO
FeO
PbO2
FeO2
Correct formula not shown
What is the empirical formula of a compound that contains 8.70 grams of potassium, 8.77 grams of selenum and 7.10 grams of oxygen? When writing the formula - write the symbols in the order given.
KSeO4
K(SeO4)2
KSe2O4
K2SeO4
Correct formula not shown
Determine the formuala for a Hydrate that is 22.75 grams zinc, 11.15 grams sulfur, 22.27 grams oxygen, and 43.84 grams H2O.
ZnSO2 * 8 H2O
ZnSO3 * 7 H2O
ZnSO4 * 7 H2O
ZnSO4 * 8 H2O
Correct formula not shown
A sample of a compound was analyzed and the empirical formula was found to be CoC4O4. Determine the molecular formula if the molecular mass is 341.86 g / mol.
CoC4O4
Co2C4O4
Co2C8O8
Co2C4O4
Correct formula not shown
What is the empirical formula of a compound that contains 29.1% sodium, 40.5% sulfur and 30.4% oxygen? When writing the formula - write the symbols in the order given.
Na2SO4
NaSO1.5
Na2SO3
Na2S2O3
Correct formula not shown
A compound that contains only nitrogen and oxygen is 30.4% nitrogen by mass; the molar mass of the compound is 92 g / mol. Determine the molecular formuala of this compound?
NO2
N2O4
NO4
N4O8
Correct formula not shown
Determine the formuala for a Hydrate that is 20.10 grams of iron, 34.57 grams of sulfate (polyatomic ion), and 45.34 grams of H2O.
Fe2(SO4)3 * 7 H2O
FeSO4 * 7 H2O
Fe2(SO3)3 * 7 H2O
FeSO3 * 7 H2O
Correct formula not shown
Determine the formuala for a Hydrate that is 26.31 grams of copper, 51.34 grams of nitrate (polyatomic ion), and 22.36 grams of H2O.
CoNO3 * 3 H2O
Co(NO3)2 * 3 H2O
CuNO3 * 3 H2O
Cu(NO3)2 * 3 H2O
Correct formula not shown
A sample of asorbic acid, vitamin C, was analyzed and 14.39 grams of carbon, 1.61 grams of hydrogen, and 19.18 grams of oxygen were identified. Determine the molecular formula if the molecular mass is 176.0 g / mol.
C3H4O3
C6H8O6
C12H16O12
C4H6O4
Correct formula not shown
A sample of Decane was analyzed and the empirical formula was found to be C5H11. Determine the molecular formula if the molecular mass is 142.0 g / mol.
C5H11
C10H22
C10H33
C15H33
Correct formula not shown
What is the empirical formula of a compound that contains 32.4% sodium, 22.6% sulfur and 45.0% oxygen? When writing the formula - write the symbols in the order given.
Na2S2O3
Na2SO3
Na2SO4
NaSO4
Correct formula not shown
Determine the formuala for a Hydrate that is 20.26% cobalt, 42.62% nitrate (polyatomic ion), and 37.12% H2O.
Co(NO3)3 * 6 H2O
Co(NO3)2 * 5 H2O
Co(NO3)2 * 3 H2O
Co(NO3)2 * 6 H2O
Correct formula not shown
Octane is a gas. It contains 84.2% carbon, and 15.8% hydrogen. The molecular mass for octane is 114 g / mol - What is the molecular formula for octane?
C8H8
C8H10
C8H14
C8H20
Correct formula not shown
Determine the formuala for a Hydrate that is 9.20 grams sodium, 2.40 grams carbon, 9.60 grams oxygen and 3.60 grams H2O.
Na2CO3 * 2 H2O
Na2CO3 * H2O
NaCO3 * 2 H2O
Na2CO2 * H2O
Correct formula not shown
Pentane is a gas. It contains 84.2% carbon, and 15.8% hydrogen. The molecular mass for octane is 114 g / mol - What is the molecular formula for octane?
C5H12
C5H5
C5H10
C5H14
Correct formula not shown
Determine the empirical formula for an iron oxide compound. This iron oxide compound contains 69.94% iron, and 30.06% oxygen.
Fe3O2
Fe2O3
FeO
Fe1.5O
Correct formula not shown
A sample of a compound was analyzed and the empirical formula was found to be P2O5. Determine the molecular formula if the molecular mass is 283.88 g / mol.