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An experimental chamber has a volume of 75 ml How many moles of oxygen gas will be required to fill the chamber at STP?
Accepted Answer
At STP (Standard Temperature and Pressure: 0°C and 1 atm), 1 mole of any ideal gas occupies 22.4 L. Using this information, we can calculate the moles of oxygen needed to fill the 75 mL chamber:
1. Convert the volume to liters: 75 mL
(1 L / 1000 mL) = 0.075 L
2. Set up a proportion: (1 mole / 22.4 L) = (x moles / 0.075 L)
3. Solve for x: x = (1 mole
0.075 L) / 22.4 L = 0.0033 moles
Therefore, approximately 0.0033 moles of oxygen gas are needed to fill the chamber at STP.
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