Homework Answers
Molecular formula is C2F4
molar mass of C = 12g/mol and F = 19 g/mol
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Molecular Formula of a Gas 2.41 g of a gaseous compound, comprised of only the elements...
A gaseous hydrogen and carbon containing compound is decomposed and found to contain 85.63% C and...
A gaseous hydrogen and carbon containing compound is decomposed and found to contain 85.63% C and 14.37% H by mass. The mass of 258 mLof the gas, measured at STP, was found to be 0.646 g. What is the molecular formula of the compound?
A scientist decides to determine the molecular formula of a compound containing only carbon and hydrogen....
A scientist decides to determine the molecular formula of a compound containing only carbon and hydrogen. The compound is first analyzed by combustion analysis. 2.257 g of the compound was found to produce 4.21 L of carbon dioxide gas at 1.0 bar, 298.15 K, and 1.92 g of water. Determine the empirical formula. The molecular formula is determined using data from the combustion analysis and the Dumas method. Given the Dumas method data below, determine the molecular formula of the...
CHAPTERS Practice Problems 6. An unknown gaseous hydrocarbon (compound composed of carbon and thydrogen only) conai...
CHAPTERS Practice Problems 6. An unknown gaseous hydrocarbon (compound composed of carbon and thydrogen only) conaists of 85.63% carbon by mass. A 0.335-g sample of the gas occupies a volume of 0.107 Lat STP (1 atm, oPC) What is the molecular formula of the gas7
A gaseous sample of a compound has a gas density of 0.647 g/L at 694 torr and 20 °C. What is the 4. molar mass of t...
A gaseous sample of a compound has a gas density of 0.647 g/L at 694 torr and 20 °C. What is the 4. molar mass of this compound? If this compound contains only nitrogen and hydrogen, and is 82.2% nitrogen by mass, what is its molecular formula? 5. What is the density in g/L of neon gas at STP?
a gaseous hydrogen and carbon containing compound is decomposed and found to contain 79.85% C and...
a gaseous hydrogen and carbon containing compound is decomposed and found to contain 79.85% C and 20.15% H by mass A.) What is the empirical formula of the compound? I already found the the empirical formula, its CH3 B.) at 43.0 °C and 0.984 atm, the gas occupies a volume of 1.8 L and has a mass of 2.04g. what is the molecular formula of the compound?
Molecular Formula from Elemental Analysis and Molecular Mass Determination An unidentified covalent molecular compound contains only...
Molecular Formula from Elemental Analysis and Molecular Mass Determination An unidentified covalent molecular compound contains only carbon, hydrogen, and oxygen. When 7.80 mg of this compound is burned, 18.12 mg of CO2 and 1.98 mg of H2O are produced. The freezing point of camphor is lowered by 26.4°C when 3.236 g of the compound is dissolved in 17.25 g of camphor (Kf = 40.0°C kg/mol). What is the molecular formula of the unidentified compound? Choose appropriate coefficients in the molecular...
Calculate the pressure ( atm ) of a 33.6 g sample of CO gas that is...
Calculate the pressure ( atm ) of a 33.6 g sample of CO gas that is in a 48.4 L container at a temperature of 145 °C. A gas containing carbon and oxygen analyzed as 42.8 % carbon and 57.2 % oxygen. A 47.6 g sample of a gas occupied a volume of 13100 mL with a pressure of 3420.0 torr at 423 K. Enter the molecular formula of the compound. A 21.0 g sample of a gas with the...
molecul Sumber of d with excess A gaseous compound of carbon, hydrogen and chlorine had the...
molecul Sumber of d with excess A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78% = 2.08 and Cl = 75.14%. A 1.26 g sample of this gas occupies a volume of 435 ml at a pressure of 0.736 atm and temperature of 270C. a) What is the empirical formula of the unknown gas (3 points) show. all setup & work Answer: empirical formula = b) What is the molar mass of the unknow...
Determined the Empirical formula and molecular formula for the following? A 11.81 gram sample of an...
Determined the Empirical formula and molecular formula for the following? A 11.81 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 14.98 grams of CO2 and 4.089 grams of H2O are produced. In a separate experiment, the molar mass is found to be 104.1 g/mol. Determine the empirical formula and the molecular formula of the organic compound. Enter the elements in the order C, H, O empirical formula = molecular formula =
A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78%; H...
A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78%; H = 2.08 % and Cl = 73.14 %. A 1.26 g sample of this gas occupies a volume of 435 ml. at a pressure of 0.736 atm and temperature of 27°C. a) What is the empirical formula of the unknown gas (3 points) show all setup & work Answer: empirical formula = b) What is the molar mass of the unknow gas (3 points)...
A scientist decides to determine the molecular formula of a compound containing only carbon and hydrogen. The compound is first analyzed by combustion analysis. 2.257 g of the compound was found to produce 4.21 L of carbon dioxide gas at 1.0 bar, 298.15 K, and 1.92 g of water. Determine the empirical formula. The molecular formula is determined using data from the combustion analysis and the Dumas method. Given the Dumas method data below, determine the molecular formula of the...
CHAPTERS Practice Problems 6. An unknown gaseous hydrocarbon (compound composed of carbon and thydrogen only) conaists of 85.63% carbon by mass. A 0.335-g sample of the gas occupies a volume of 0.107 Lat STP (1 atm, oPC) What is the molecular formula of the gas7
A gaseous sample of a compound has a gas density of 0.647 g/L at 694 torr and 20 °C. What is the 4. molar mass of this compound? If this compound contains only nitrogen and hydrogen, and is 82.2% nitrogen by mass, what is its molecular formula? 5. What is the density in g/L of neon gas at STP?
Molecular Formula from Elemental Analysis and Molecular Mass Determination An unidentified covalent molecular compound contains only carbon, hydrogen, and oxygen. When 7.80 mg of this compound is burned, 18.12 mg of CO2 and 1.98 mg of H2O are produced. The freezing point of camphor is lowered by 26.4°C when 3.236 g of the compound is dissolved in 17.25 g of camphor (Kf = 40.0°C kg/mol). What is the molecular formula of the unidentified compound? Choose appropriate coefficients in the molecular...
molecul Sumber of d with excess A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78% = 2.08 and Cl = 75.14%. A 1.26 g sample of this gas occupies a volume of 435 ml at a pressure of 0.736 atm and temperature of 270C. a) What is the empirical formula of the unknown gas (3 points) show. all setup & work Answer: empirical formula = b) What is the molar mass of the unknow...
A gaseous compound of carbon, hydrogen and chlorine had the following composition: C = 24.78%; H = 2.08 % and Cl = 73.14 %. A 1.26 g sample of this gas occupies a volume of 435 ml. at a pressure of 0.736 atm and temperature of 27°C. a) What is the empirical formula of the unknown gas (3 points) show all setup & work Answer: empirical formula = b) What is the molar mass of the unknow gas (3 points)...
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