determine the molar mass for the following compound methane, used as a gas for ovens and...
Determine the molar mass of an unknown gas, if that unknown gas effuses via an orifice at a rate 5.42 x 10^-9 mol/s, and methane (CH4) effuses through the same orifice at the rate of 1.30 x 10^-8 mol/s, both gases having the same temperature and pressure.
What percent of the molar mass of methane, CH4, is due to the carbon atom?
Which of the following methods cannot be used to determine the molar mass of a nonelectrolyte? a)measurement of the freezing-point depression of a solution of the compound b)measurement of the boiling-point elevation of a solution of the compound c)measurement of the osmotic pressure of a solution of the compound d)measurement of the x-ray diffraction of a pure crystal of the compound e)measurement of the pressure, temperature, volume, and mass of the compound in the gaseous state a)1,1 b)2,1 c)1,2 d)4,1...
Methane gas, CH4, effuses through a barrier at a rate of 0.568 mL/minute. If an unknown gas effuses through the same barrier at a rate of 0.343 mL/minute, what is the molar mass of the gas? **Please explain question **this question has already been posted but the answer was not very explicative. Thank you!
acetaldehyde is a common liquid compound that vaporizes readily. Determine the molar mass of acetaldehyde from the following data: sample mass = 0.107 g volume of gas = 125 mL temperature = 0.0 C pressure = 331 mmHg [answer looks like: "# g/mol" with 3 SF]
methane gas (ch4) is used in a combustion chamber with theoretical air to produce heat. the fuel is at 25 c, air is at 37 c, and the products of combustion are at 1100 K. Determine the amount of heat released during this combustion, (kj/ kg fuel) . 1 nov olugls Combustion chamber 3700
Determine the molar mass of an unknown non-electrolyte compound given the following data: 1.453 grams of the unknown compound is dissolved in 10.08 grams of water (Kf = 1.853 0C/m). The solution freezes at -1.47 0C. What is the molar mass of the unknown compound?
Prelab Questions: Apparent Molar Mass of Air 1. What is a molar mass (of a compound)? What are its units? 2. What is the equation for the ideal gas la? What units are typically used? Hint: pressures are typically measured as atmospheres or torr.] 3. Rearrange the ideal gas law to solve for moles (n) flask assembly containi air has a mass of 138.562 g at 25 138.541 g when submerged in boiling water at 99.7°C, calculate the molar mass...
A student devised an experiment to determine the molar mass of an unknown gas X. Firstly, he filled a glass gas syringe (accurate to ± 0.5 cm3 ) with 100 cm3 of air then placed a rubber seal over the nozzle and weighed the syringe. He then emptied the gas syringe, refilled it with 100 cm3 of the unknown gas X, replaced the rubber seal and reweighed the syringe. Finally, he measured the temperature of the room. He obtained the...
Molar Volume 11. What is the volume of 0.60 g of methane (CH4 MM = 16.04 g/mol) at STP? STP? many grams of methane (CHE MM = 16.04 g/mol) are there in 7.00 7,00 L of the past Ideal Gas Law 0.278 8 of a mystery gas hydrocarbon occupies a volume of 0.400 L at 5 pressure of 886 mmHg. What is the molar mass of this gas, and what is L at 55.0°C and a what is its identity...