A sample of gas in a balloon has an initial temperature of 27 ∘C and a volume of 1800 L . If the temperature changes to 86 ∘C , and there is no change of pressure or amount of gas, what is the new volume, V_2, of the gas? What Celsius temperature, T_2, is required to change the volume of the gas sample in Part A (T_1 = 27 ∘C , V_1= 1800 L ) to a volume of 3600 L ? Assume no change in pressure or the amount of gas in the balloon.

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Q: what will be its new volume in milliliters?

A:

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A: Answer is attached below

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Q: What volume does a 15.0g sample of helium (He) gas at 25oC and 1.66 atm occupy?

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A:

Q: Calculate the density of propane gas, C3H8, at 20.0oC and 1.15 atm?

A:

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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.