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How do you find #""_11P_3#?

↳Redirected from "A 5.00 L sample of helium at STP expands to 15.0 L. What is the new pressure on the gas?"

1 Answer

Jun 2, 2017

#"_11P_3=990#

Explanation:

#"_nP_r=(n!)/((n-r)!)#

#"_11P_3=(11!)/((11-3)!)#

#"_11P_3=(11xx10xx9xxcancel(8!))/cancel((8!))#

#"_11P_3=990#

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