How many carbon dioxide molecules are in 500.0 mL of CO₂ gas at STP?

Name: How many carbon dioxide molecules are in 500.0 mL of CO₂ gas at STP?
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Quizplus · Accepted Answer

At STP (Standard Temperature and Pressure), 1 mole of any gas occupies 22.4 liters. Since 500.0 mL is 0.5 liters, we can calculate the number of moles of CO₂ gas as 0.5 L / 22.4 L/mol = 0.02232 mol. Using Avogadro's number (6.022 x 10^23 molecules/mol), the number of molecules is 0.02232 mol x 6.022 x 10^23 molecules/mol = 1.34 x 10^22 molecules.

How Many Carbon Dioxide Molecules Are in 500