A sample of N2 with an initial pressure of 790. mmHg at − 87 ∘C is heated to 24 ∘C Express the pressure to three significant figures and include the appropriate units.

2.00L of carbon dioxide gas (the main component of the Martian atmosphere) is contained at a pressure of 101.3 kPa at room temperature (21oC) on Earth. The daytime temperature at the equator during summer on Mars is also 21oC. If the atmospheric pressure on Mars is 6.01 mmHg, what volume would the gas occupy on Mars?

Calculate the number of grams of Mg that reacted to produce hydrogen gas with a volume of 16303 mL collected at 764.77 torr and 21.6˚ C.   Mg (s)          +         2 HCl (aq)            →          H2 (g)           +       MgCl2 (aq) The gas was not collected over water. The ideal gas constant, R = 82.1 atm·mL/mol·K.The ideal gas equation is: PV=nRT

For many purposes we can treat ammonia (NH,) as an ideal gas at temperatures above its boiling point of –33. °C. Suppose the temperature of a sample of ammonia gas is raised from – 25.0 °C to 17.0 °C, and at the same time the pressure is changed. If the initial pressure was 0.15 kPa and the volume decreased by 50.0%, what is the final pressure? Round your answer to 2 significant digits. kPa 1 Don't Know Submit etv DII esc %23 24 6 7 09 2 4 OP E T Y.

Calculate the pressure, in atmospheres, of 2.40 molesmoles of helium gas in a 10.0-LL container at 21 ∘C∘C. Express your answer with the appropriate units.