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# What is the density of Iodine (I2) gas at STP (standard temperature and pressure)?

please help and explain! thanks

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- Lexi RLv 710 years agoFavorite Answer
At STP (which is standard temperature (0 deg C) and pressure (1.0 atm)) 1 mole of any ideal gas occupies a volume of 22.4 L.

molar mass I2 = 253.8 g/mol

So at STP 22.4 L of I2 has a mass of 253.8 g

density = mass / volume

= 253.8 g / 22.4 L

= 11.3 g/L

For questions not at STP you can use this equation

Density = PM/RT

eg, for your question

P = pressure (1.0 atm)

M = molar mass (253.8 g/mol

R = gas constant (0.082057 L atm mol^-1 K^-1)

T = temperature (273.15 K)

d = 1.0 atm x 253.8 g/mol / (0.082057 x 273.15K)

= 11.3 g/L

- Anonymous5 years ago
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RE:

What is the density of Iodine (I2) gas at STP (standard temperature and pressure)?

please help and explain! thanks

Source(s): density iodine i2 gas stp standard temperature pressure: https://tr.im/8mKuj

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