Question

The lowest pressure achieved in a laboratory is about 1.0 10-15 mm Hg. How many molecules of gas are present in a 1.23 L sample at that pressure and a temperature of 24.1°C?

Answer 1

PV=nRT, ma friend.

Answer 2

how many molecules though? @aaronq

Answer 3

find the number of moles, then multiply that by avogadros number

Answer 4

thanks, it turned out i typed in the wrong number for avogadro's number in the calculator

Answer 5

damn, at least you caught it !