At STP the density of a gas (mol.wt=45) in g/L is ............. Write in step!!!!plz!!!
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The density of any substance is calculated as Density = mass / volume.
One mole of any gas at STP will occupy a volume of 22.4 L (standard molar volume). The gas in question would have a molar mass of 45 g/mol.
Therefore, the density of your gas is: D = m/V = 45 g / 22.4 L = 2.0 g/L
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