You are trapped on a desert island without any reference books, and you need the value of the ideal gas constant R. Luckily, you stumble upon the following tank of helium (see below). Use what you found to calculate the value of R. Make sure your units are L · atm/K · mol. Oh, by the way, while you forgot the value of R, you do remember that helium has a molar mass of 4.003 g/mol and also how to convert to Kelvin.

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T= 25.0 °C- Tank volume 120.9L 515 5 Mass of gas in tank 100.0 g 3 2 0 atm 10