2. (а) A helium gas (He) leak resulted in a rectangular vessel (200 cm x 20 cm x 10 cm) becoming pressurized at a temperature of 20 °C with 400 g of helium. Given that the van der Waals constants for helium (He) are: a (L? atm mol?) = 0.0341

Q: Convert 287 kPa to atm 287   kPa

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A:

Q: Calculate the density of chlorine at 118 KPa and 75 degress Celsius.

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Q: Determine the kinetic energy, in J / mol , of a sample of nitrogen molecules at 100.0 *C

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Q: 2. Which choice describes the difference between real gases and ideal gases? *

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Q: All ideal gases have the same density at 25°C and 1 bar. Is it true or false?

A:

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Q: 112 L N2 at 129 kPa and 303 K?

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.