15 16 clickerquestion usingnpvrttodeterminen

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ines up exactly, the cm scale reading is 74.85cm = 748.5mm of mercury. 13 14 Using n=PV/RT to determine n • Our barometer height is measured in cm. – Convert to mm. Determine the volume of the tube: • 760 mm mercury = 760 Torr at 0oC by definition. Fill the tube with water and weigh it. The volume of the water can be determined from its mass (d=m/V). dumas.mov – At room temperature, this is still valid to 3 sig figs. • 760 Torr = 1 atm (this is a definition, therefore this is an exact conversion). There is a table of the density of water at different temperatures in the lab manual. • You should read the scale to 4 sig figs. • But after the conversion, you’ll only have 3 sig figs because of the...
View Full Document

This note was uploaded on 02/07/2014 for the course CHEMISTRY 030.105 taught by Professor Pasternick during the Fall '06 term at Johns Hopkins.

Ask a homework question - tutors are online