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maceng7
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Homework Statement
A vacuum pump on Earth can produce a vacuum with a pressure as low as 1.00*10^-8 torr. How many molecules are present in each mL at a temperature of 27.0 degrees Celsius?
V = 1mL = 10^-3 L <-- How many sig figs should I use here? Should I make it 1.00*10^-3L or keep it 10^-3L?
P = 1.315789 atm
T = 300.15 K
n = ?
Homework Equations
Pv = nRT
The Attempt at a Solution
PV =nRT
n = PV / RT
= (1.315789atm)(1.00*10^-3L) / (0.08206 Latm / Kmol)(300.15K)
= 5.342156*10^-16mol * 6.022*10^23 molecules
= 3.22*10^8 molecules / L <--- How do I change my answer back to how many molecules/mL and how many sig figs should my answer reflect? 1 or 3?