A neon sign is made of glass tubing whose inside diameter is 4.5 - How many grams of neon are in this sign?

24th of April 2010 1

How many grams of neon are in this sign?

A neon sign is made of glass tubing whose inside diameter is 4.9 cm and whose length is 5.3 m. If the sign contains neon at a pressure of 2.03 torr at 33°C, how many grams of neon are in the sign?

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1 great comment(s) for this post

  1. Dr.A 1:42 am 24/04 of 2010

    r = 4.9/2 = 2.45 cm = 0.245 dm
    V = 53 dm x 3.14(0.245)^2 = 9.99 dm^3
    p = 2.03 /760=0.00267
    T = 33 + 273 = 306 K

    n = 9.99 x 0.00267 / 0.0821 x 306=0.00106
    20.18 g/mol x 0.00106 mol= 0.0214 g

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