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0 votes
18.4k views
in Chemistry by (29.3k points)

The number of chlorine atoms in 20 mL of chlorine gas at STP is......1021. (Round off to the Nearest Integer).

[Assume chlorine is an ideal gas at STP

R = 0.083 L bar mol–1 K–1, NA = 6.023 x 1023]

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1 Answer

+2 votes
by (30.3k points)

PV = nRT

∴ Number of Cl2 molecules, N = 5.3 x 1020

Hence, Number of Cl-atoms = 1.06 x 1021

= 1 x 1021

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