1 / 5

SI units

SI units. Dr Ron Epping LQB381 Unit Coordinator 1991 - 2012. Abbreviations. Understand SI Units. AMOUNT = kg or moles ( g, mg, mmol ) VOLUME = m 3 ( cm 3 = mL, L ) CONCENTRATION = AMOUNT / VOLUME e.g. mg / mL , mg / L , kg / L , moles / L , μ moles / mL

xena
Download Presentation

SI units

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SI units Dr Ron EppingLQB381 Unit Coordinator 1991 - 2012

  2. Abbreviations

  3. Understand SI Units • AMOUNT = kg or moles (g, mg, mmol) • VOLUME = m3 (cm3 = mL, L) • CONCENTRATION = AMOUNT / VOLUME • e.g. mg/mL, mg/L, kg/L, moles/L, μmoles/mL • NOTE: some combinations are IDENTICAL • 2.0 moles/L = 2.0 mmoles/mL = 2.0 μmoles/μL • 3.0 g/L = 3.0 mg/mL = 3.0 μg/μL • note: In a formula, units cancel out! STICK TO SI UNITS • DO NOT CONFUSE MOLES WITH MOLAR • MOLES is an amount • MOLAR (moles/L) is a concentration • Since many students confuse the two, stick to using “moles/litre”

More Related