What is the molar mass of a gas if 1.30g of the gas has a volume of 255 mL at STP?
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What is the molar mass of a gas if 1.30g of the gas has a volume of 255 mL at STP?
( THE ANSWER IS NOT 130g/mol)
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- A sealed 29.0-m3 tank is filled with 2,474 moles of oxygen gas (O2) at an initial temperature of 270 K. The gas is heated to a final temperature of 487 K. The ATOMIC mass of oxygen is 16.0 g/mol, and the ideal gas constant is R = 8.314 J/mol · K = 8.314 J/mol · K. The final pressure of the gas in kiloPascals is closest toThe most probable speed for molecules of a gas at 296 K is 263 m/s. What is the molar mass of the gas? (You might like to figure out what the gas is likely to be.)The volume of an automobile tire is 2.5 × 10−2m3 . the pressure of the air in the tire is 3 atm and the temperature is 37C ◦ . what is is the mass of air in grams ? The mean molecular mass of air is 29g. 1 atm = 1.01 × 105 Pa ; Calculate to 2 decimals.
- The total translational kinetic energy of the molecules of a sample of gas at 415 K is 17500 J. How many moles n does the sample comprise? mol n = Find the average translational kinetic energy Ky of a single molecule. J Kav(a) 0.3740 moles of krypton gas is placed in a 9.75 L container at 239 K. Find the pressure of the gas in bar? (b) What is the average kinetic energy per mole of krypton gas atoms featured in the previous part? Report your answer in J/mol.A 10.0 L container contains a certain gas at a temperature of 25.0◦C and pressure of 9.50 atm. Calculate the number of moles of gas in the container.
- Suppose the amount of air in a person's lungs is 1.75 L. Calculate the number of moles of air molecules in the person’s lungs when the pressure there is atmospheric pressure. Note that the air is at 37.0°C (body temperature).A hot air balloon uses the principle of buoyancy to create lift. By making the air inside the balloon less dense then the surrounding air, the balloon is able to lift objects many times its own weight. A large hot air balloon has a maximum balloon volume of 2090 m3. a. If the air temperature in the balloon is 54 °C, how much additional mass, in kilograms, can the balloon lift? Assume the molar mass of air is 28.97 g/mol, the air density is 1.20 kg/m3, and the air pressure is 1 atm.