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Date Posted: 07:40:31 08/24/01 Fri
Author: Eugenia
Subject: qns from prac3

Hello Mr. Yeo,
can u pls explain qns 29 fr prac3?

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[> Re: qns from prac3 -- Mr. Yeo Woei Ter, 02:50:54 08/25/01 Sat

One mole of sodium atoms contain Avogadro constant (6 * 10**23) number of sodium atoms.

Hydrogen, oxygen and chlorine gas are all diatomic, with formula H2, O2 and Cl2

Thus one mole of hydrogen gas, H2 will contain 2 * 6 * 10**23 hydrogen atoms (that goes the same for oxygen and chlorine)

However, helium is a monatomic gas.

Thus one mole of helium gas will also contain 6 * 10**23 helium atoms!

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