Podcast Beta
Questions and Answers
True or false: Density of a gas is generally given in g/L?
True
True or false: The mass of 1 mole is equal to the molar mass?
True
True or false: According to Dalton’s law of partial pressures, the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the component gases?
True
True or false: The pressure in the container of heliox (500 kPa) is the same as the sum of the pressures in the containers of helium and oxygen (400 kPa + 100 kPa)?
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True or false: When collecting a gas over water, the atmospheric pressure is 760 mm Hg, and the water temperature is measured to be 20°C.
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Study Notes
Gas Properties and Laws
- Density of a gas is generally not given in g/L (typically measured in g/m³ or kg/m³)
- The mass of 1 mole is equal to the molar mass ( vrai )
Dalton's Law of Partial Pressures
- According to Dalton's law of partial pressures, the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the component gases ( vrai )
Gas Mixtures and Pressure
- The pressure in the container of heliox (500 kPa) is equal to the sum of the pressures in the containers of helium and oxygen (400 kPa + 100 kPa) ( vrai )
Collecting Gases over Water
- When collecting a gas over water, the atmospheric pressure is typically considered to be 760 mm Hg
- The water temperature is an important factor to measure, in this case, 20°C
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Description
Test your knowledge of physical chemistry and bio-chemistry basics with this quiz. Topics include density of gases at STP and Dalton's law of partial pressures. Suitable for first-year students and anyone interested in fundamental concepts of chemistry.
