JEE Main 2022 · 28 Jun · Shift 2 · Chemistry Q81

← JEE Main 2022 · 28 Jun · Shift 2

ChemistryInteger+4 / -1Question 81 of 90

100 g of an ideal gas is kept in a cylinder of 416 L volume at 27°C under 1.5 bar pressure. The molar mass of the gas is ______ g mol $^{-1}$ . (Nearest integer)

(Given : R = 0.083 L bar K $^{-1}$ mol $^{-1}$ )

Your answer

Answer and worked solution

Official answer: 4

Molar mass. $M=\dfrac{mRT}{PV}=\dfrac{100\times0.083\times300}{1.5\times416}\approx3.99$ , i.e. 4 g mol $^{-1}$ .

Answer: 4

Topics:Ideal gas equation

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JEE Main 2022 · 28 Jun · Shift 2, Chemistry question 81