1 mile 1609 km ACT 14 L19 How long will it take 100 mL N2 gas at STP to effuse through a porous barrier if it has been observed that 921 minutes are required for 100 mL Cl2 gas to effuse through the same barrier. The density of ethane is 1264 g dm-3 at 20C and 1 atmosphere.
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Calculate the relative formula mass of ethane.
. The density value means that 1 dm 3 of ethane weighs 1264 g. This is about as tricky as it gets using the ideal gas equation. Report your answer to two sig figs.
Finding the relative formula mass of a gas from its density.
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