# chemistry

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How do I work out the density of HCI at 600 celsius ?

Thanks

• chemistry -

I assume you mean the gas, hydrogen chloride.

PV=nRT
density is mass/volume
n/V=P/RT
mass/V= molmass*Pressure/RT

• chemistry -

I would use PV = nRT and rework it a little
n = g/M where M is molar mass.
PV = (g/M)RT, then
PVM = gRT and
PM = gRT/V where g/V is the density and solve for g/V = density = PM/RT. Check my algebra.

• chemistry -

Thank you guys I will try both suggestions

• chemistry -

OK to try both I suppose but aren't both the same? (They are the same formula!)

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