A neon sign is made of glass tubing whose inside diameter is2.5cm and whose leng

Question

A neon sign is made of glass tubing whose inside diameter is2.5cm and whose length is 5.5m If the sign contains neon at apressure of 1.78 torr at 35 degrees C, how many grams of neon arein the sign? (The volume of a cylinder is pi*r^2*h)
In this problem, i understand that the ideal gasequation needs to be used. We are to use the formula PV =nRT. I do not understand how to know when we should use the molarmass because it is not in the formula. Is it because there isan actual gas present? A neon sign is made of glass tubing whose inside diameter is2.5cm and whose length is 5.5m If the sign contains neon at apressure of 1.78 torr at 35 degrees C, how many grams of neon arein the sign? (The volume of a cylinder is pi*r^2*h)
In this problem, i understand that the ideal gasequation needs to be used. We are to use the formula PV =nRT. I do not understand how to know when we should use the molarmass because it is not in the formula. Is it because there isan actual gas present?

Explanation / Answer

Can you post the problem? Most of us don't have the book.

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