# chemistry as level

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#1
at a temperature of 2500k and a pressure of 1.00×10^-4 Pa a sample of 0.321 of sulphur vapour has a volume of 2.08×10^6m^3
what is the molecular formula of sulphur
A s B s2 C s4 D s8
I need help plz
0
2 years ago
#2
(Original post by Aysh_miley)
at a temperature of 2500k and a pressure of 1.00×10^-4 Pa a sample of 0.321 of sulphur vapour has a volume of 2.08×10^6m^3
what is the molecular formula of sulphur
A s B s2 C s4 D s8
I need help plz
Use the equation pV = nRT

This explains how to use it: https://www.chemguide.co.uk/physical/kt/idealgases.html

Then use the moles and the mass to calculate the molar mass. Look up the relative mass of sulphur in the periodic table, and see how many atoms of sulphur would give the correct molar mass
1
#3
thank u
0
1 year ago
#4
wait so that gives molar mass= 32.06 blah blah blah right? which is pretty much the molar mass of sulfur. as in s. so how is it s8?
0
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