A cold trap is set up to cause molecules to linger near the suction in a vacuum system.If the cold trap has an effective volume of 0.200 L and is maintained at how many molecules are in it at 10.0 Pa of pressure? (Avogadro's number is 6.022 × 1023 molecules/mol,and the universal gas constant is 8.314 J/mol ∙ K.Assume the behavior of an ideal gas.)
A) 1.11 × 1019 molecules
B) 1.10 × 1022 molecules
C) 7.71 × 1020 molecules
D) 7.71 × 1023 molecules
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