8. A certain anesthetic contains 64.9 percent carbon, 13.5 percent hydrogen, and 21.6 percent oxygen by mass. At 120°C and 750 mmHg, 1.00 L of the gaseous compound weighs 6.90 g. What is the molecular formula of the compound?

Ammonia Production Ammonia is often formed by reacting nitrogen and hydrogen gases. How many liters of ammonia gas can be formed from 13.7 L of hydrogen gas at 93.0°C and a pressure of 40.0 kPa?

A.) What is the temperature of 0.45 mol of gas at a pressure of 1.0 atm and a volume of 12.0 L ? Express the temperature in kelvins to two significant figures.   B.) A weather balloon is inflated to a volume of 25.9 L at a pressure of 752 mmHg and a temperature of 27.5∘C. The balloon rises in the atmosphere to an altitude where the pressure is 400. mmHg and the temperature is -15.3∘C. Assuming the balloon can freely expand, calculate the volume of the balloon at this altitude.

6. The ideal gas law is a very simple mathematical relationship that relates several physical properties of a gas. This law is only valid when the behavior of a gas is idealized according to three principal assumptions. (i) State the three assumptions made about an ideal gas, and for each assumption (ii) explain which physical property of a gas would be affected if that assumption was not made.

A sample of polyatomic gas weighs 6.94 g and at a temperature 30.0 C it has a volume of 2.49 L and a pressure of 361 torr.   What is the molecular weight of the gas? (hint: remember that PV=nRTPV=nRT) The molecular structure of the gas in the above problem has a total of 7 atoms and contains only sulfur and fluorine atoms. Based on its molecular weight you calculated above, which of the following empirical formulas is most likely to be correct for the gas? SF6 S2F5 S3F4 S4F3 S5F2 S6F None of these formulas are correct

You have a compound that is 79.9% C and 20.1% H by mass. b. If 3.68 g of the compound is turned to gas in a 2.50 L container at 100°C and 1.50 atm pressure, what is the molecular formula?

A sample of sulfur dioxide gas has a density of ___ g/L at a pressure of 0.998 atm and a temperature of 37 °C. Assume ideal behavior.

A mixture of hydrogen and xenon gases, at a total pressure of 813 mm Hg, contains 0.112 grams of hydrogen and 27.7 grams of xenon. What is the partial pressure of each gas in the mixture? P H2 =  mm Hg  P Xe=  mm Hg

A helium-filled weather balloon has a volume of 731 L at 23.9°C and 754 mmHg. It is released and rises to an altitude of 2.07 km, where the pressure is 641 mmHg and the temperature is 9.9°C. a. The volume of the balloon at this altitude is  L.       2.  A sample of helium gas at a pressure of 761 mmhg and a temperature of 32ºc, occupies a volume of 8.71 L. If the gas is cooled at constant pressure to a temperature of 11ºc, the volume of the gas sample will be   L.

What is the final temperature of a gas (in °C) that starts at a pressure of (4.51x10^2) mm Hg, a volume of (8.400x10^0) L, and a temperature of (3.270x10^1)°C and is changed to a pressure of (7.3000x10^2) mm Hg and a volume of (6.9000x10^0) L?