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Gas Laws

Helium-filled Balloon Pressure

Keith wants a large helium balloon, his mom can only fit 10.0 L in her small car. The temperature outside is 17.0 The balloon has a mass of 500 g He. What pressure should she have the balloon filled with helium? a) 0.114 kPa b) 2.98 104 kPa c) 1.95 kPa d) 1.14 kPa How to set up the problem - explain in detail (high scho

Pressure of Gas

A sample of gas occupies 135 mL at 22.5 C; the pressure is 165 mm Hg. What is the pressure of the gas sample when it is placed in a 252-mL flask at a temperature of 0.0 C? pressure of gas sample___________________ mmHg Ethane, C2H6, burns in air according to the equation 2C2H6(g) 7 O2(g)---->4CO2(g) + 6H2O(g) Wh

Pressure volume question

I need need help with the following. A flexible gas storage container has a volume of 3.5 x 10^2 L at a temperture of 27 degrees celcius and a pressure of 115 kPa. What is the new volume if the temperture drops to -10 degrees celcius and the pressure drops to 99 kPa?

Ideal Gas Laws

I am given the volume (1024ml), pressure (1.2 atm) and temperature (36o C) and I need to determine the number of moles present.

Vapor pressure and temperature

The vapor pressure of water at 22 degrees C is 19.800 torr. If you put 26.662 g of water in a cubic container that is 1.1000 m on an edge, will there be any liquid water remaining in the container at 22 degrees C or will it all be vapor? R = 0.0820578 L*atm/K*mol.

Ideal Gas Law - Temperature of Boiling Point of Chlorine

A hydrogen gas thermometer is found to have a volume of 100.0 cm3 when placed in an ice-water bath at 0°C. When the same thermometer is immersed in boiling liquid chlorine, the volume of hydrogen at the same pressure is found to be 87.2 cm3. What is the temperature of the boiling point of chlorine?

Calculating the Volume of Gas on Venus

The surface temperature of Venus is about 1050K and the pressure is about 75 Earth atmospheres. Assuming that these conditions represent a Venerian "STP", what is the standard molar volume (in liters) of a gas on Venus?

Gas equations

Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. the temp. and the pressure of ozone in the stratosphere are 250 K and 1.0*10^-3 atm. How many ozone molecules are present in 1.0 L of air under these conditions?

Will Pressure Exceed Capacity?

Question: A metal tank of volume 75.5 L will burst if the pressure in it exceeds 50.0 atm. Will this pressure be exceeded by 82.0 moles of a gas in it at 25 degrees Celsius?